Merge branch 'master' into core-updates

 Conflicts:
	gnu/packages/admin.scm
	gnu/packages/commencement.scm
	gnu/packages/guile.scm
	gnu/packages/linux.scm
	gnu/packages/package-management.scm
	gnu/packages/pulseaudio.scm
	gnu/packages/web.scm

92 files changed, 1787 insertions, 817 deletions

diff --git a/.mailmap b/.mailmap
index a1cbf02030b..97018775f6e 100644
--- a/.mailmap
+++ b/.mailmap
@@ -6,7 +6,7 @@ Al McElrath <hello@yrns.org> <hello@atonesir.com>
 Alex Sassmannshausen <alex@pompo.co> <alex.sassmannshausen@gmail.com>
 Alexander I. Grafov <grafov@gmail.com>
 Alírio Eyng <alirioeyng@gmail.com>
-Amin Bandali <mab@gnu.org> <bandali@gnu.org>
+Amin Bandali <bandali@gnu.org> <mab@gnu.org>
 Amirouche Boubekki <amirouche@hypermove.net>
 Andreas Enge <andreas@enge.fr> <andreas.enge@inria.fr>
 Andreas Enge <andreas@enge.fr> <privat@xobs-novena>
diff --git a/build-aux/git-authenticate.scm b/build-aux/git-authenticate.scm
index 514d201c804..37e0c6800c9 100644
--- a/build-aux/git-authenticate.scm
+++ b/build-aux/git-authenticate.scm
@@ -61,6 +61,9 @@
     ("atheia"
      ;; primary: "3B12 9196 AE30 0C3C 0E90  A26F A715 5567 3271 9948"
      "9A2B 401E D001 0650 1584  BAAC 8BC4 F447 6E8A 8E00")
+    ("bandali"
+     ;; primary: "BE62 7373 8E61 6D6D 1B3A  08E8 A21A 0202 4881 6103"
+     "39B3 3C8D 9448 0D2D DCC2  A498 8B44 A0CD C7B9 56F2")
     ("bavier"
      ;; primary: "34FF 38BC D151 25A6 E340  A0B5 3453 2F9F AFCA 8B8E"
      "A0C5 E352 2EF8 EF5C 64CD  B7F0 FD73 CAC7 19D3 2566")
@@ -133,9 +136,6 @@
      "B051 5948 F1E7 D3C1 B980  38A0 2646 FA30 BACA 7F08")
     ("lsl88"
      "2AE3 1395 932B E642 FC0E  D99C 9BED 6EDA 32E5 B0BC")
-    ("mab"
-     ;; primary: "BE62 7373 8E61 6D6D 1B3A  08E8 A21A 0202 4881 6103"
-     "39B3 3C8D 9448 0D2D DCC2  A498 8B44 A0CD C7B9 56F2")
     ("marusich"
      "CBF5 9755 CBE7 E7EF EF18  3FB1 DD40 9A15 D822 469D")
     ("mbakke"
diff --git a/doc/guix.texi b/doc/guix.texi
index af87d760878..8cb85fe62c0 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -22233,9 +22233,9 @@ It has the following parameters:
 @item @code{nfs-utils} (default: @code{nfs-utils})
 The nfs-utils package to use.
 
-@item @code{nfs-version} (default: @code{#f})
-If a string value is provided, the @command{rpc.nfsd} daemon will be
-limited to supporting the given version of the NFS protocol.
+@item @code{nfs-versions} (default: @code{'("4.2" "4.1" "4.0")})
+If a list of string values is provided, the @command{rpc.nfsd} daemon
+will be limited to supporting the given versions of the NFS protocol.
 
 @item @code{exports} (default: @code{'()})
 This is a list of directories the NFS server should export.  Each entry
diff --git a/gnu/build/vm.scm b/gnu/build/vm.scm
index 9a9e5bd0018..79eed48c1f1 100644
--- a/gnu/build/vm.scm
+++ b/gnu/build/vm.scm
@@ -1,5 +1,5 @@
 ;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2013, 2014, 2015, 2016, 2017, 2018, 2019 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 Ludovic Courtès <ludo@gnu.org>
 ;;; Copyright © 2016 Christopher Allan Webber <cwebber@dustycloud.org>
 ;;; Copyright © 2016, 2017 Leo Famulari <leo@famulari.name>
 ;;; Copyright © 2017 Mathieu Othacehe <m.othacehe@gmail.com>
@@ -183,6 +183,15 @@ the #:references-graphs parameter of 'derivation'."
               '())
           arch-specific-flags))
 
+  (unless (file-exists? "xchg/.exit-status")
+    (error "VM did not produce an exit code"))
+
+  (match (call-with-input-file "xchg/.exit-status" read)
+    (0 #t)
+    (status (error "guest VM code exited with a non-zero status" status)))
+
+  (delete-file "xchg/.exit-status")
+
   ;; When MAKE-DISK-IMAGE? is true, the image is in OUTPUT already.
   (unless make-disk-image?
     (if single-file-output?
diff --git a/gnu/local.mk b/gnu/local.mk
index 46e29365674..9d62bec7200 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -25,7 +25,7 @@
 # Copyright © 2019 Jonathan Brielmaier <jonathan.brielmaier@web.de>
 # Copyright © 2019 Evan Straw <evan.straw99@gmail.com>
 # Copyright © 2019 Brett Gilio <brettg@gnu.org>
-# Copyright © 2019 Amin Bandali <mab@gnu.org>
+# Copyright © 2019 Amin Bandali <bandali@gnu.org>
 # Copyright © 2020 Brendan Tildesley <mail@brendan.scot>
 # Copyright © 2020 Vincent Legoll <vincent.legoll@gmail.com>
 #
@@ -138,6 +138,7 @@ GNU_SYSTEM_MODULES =				\
   %D%/packages/cups.scm                         \
   %D%/packages/curl.scm                         \
   %D%/packages/cvassistant.scm                  \
+  %D%/packages/cybersecurity.scm                \
   %D%/packages/cyrus-sasl.scm                   \
   %D%/packages/databases.scm                    \
   %D%/packages/datamash.scm                     \
@@ -1019,7 +1020,6 @@ dist_patch_DATA =						\
   %D%/packages/patches/gtksourceview-2-add-default-directory.patch \
   %D%/packages/patches/gzdoom-search-in-installed-share.patch   \
   %D%/packages/patches/gzdoom-find-system-libgme.patch  \
-  %D%/packages/patches/hash-extender-test-suite.patch           \
   %D%/packages/patches/haskell-mode-unused-variables.patch      \
   %D%/packages/patches/haskell-mode-make-check.patch            \
   %D%/packages/patches/hdf4-architectures.patch                 \
diff --git a/gnu/packages/admin.scm b/gnu/packages/admin.scm
index ae1ed94b1bc..4e1f9afc7ef 100644
--- a/gnu/packages/admin.scm
+++ b/gnu/packages/admin.scm
@@ -32,6 +32,7 @@
 ;;; Copyright © 2019, 2020 Mathieu Othacehe <m.othacehe@gmail.com>
 ;;; Copyright © 2020 Oleg Pykhalov <go.wigust@gmail.com>
 ;;; Copyright © 2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+;;; Copyright © 2020 Michael Rohleder <mike@rohleder.de>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -49,11 +50,6 @@
 ;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
 
 (define-module (gnu packages admin)
-  #:use-module ((guix licenses) #:prefix license:)
-  #:use-module (guix packages)
-  #:use-module (guix utils)
-  #:use-module (guix download)
-  #:use-module (guix git-download)
   #:use-module (guix build-system cmake)
   #:use-module (guix build-system emacs)
   #:use-module (guix build-system gnu)
@@ -61,42 +57,59 @@
   #:use-module (guix build-system perl)
   #:use-module (guix build-system python)
   #:use-module (guix build-system trivial)
+  #:use-module (guix download)
+  #:use-module (guix git-download)
+  #:use-module ((guix licenses) #:prefix license:)
+  #:use-module (guix packages)
+  #:use-module (guix utils)
   #:use-module (gnu packages)
   #:use-module (gnu packages algebra)
+  #:use-module (gnu packages autotools)
   #:use-module (gnu packages base)
   #:use-module (gnu packages bash)
+  #:use-module (gnu packages bison)
+  #:use-module (gnu packages boost)
   #:use-module (gnu packages c)
   #:use-module (gnu packages check)
+  #:use-module (gnu packages compression)
+  #:use-module (gnu packages cross-base)
   #:use-module (gnu packages crypto)
   #:use-module (gnu packages cryptsetup)
   #:use-module (gnu packages cyrus-sasl)
   #:use-module (gnu packages dns)
+  #:use-module (gnu packages elf)
   #:use-module (gnu packages file)
-  #:use-module (gnu packages ncurses)
-  #:use-module (gnu packages readline)
+  #:use-module (gnu packages flex)
+  #:use-module (gnu packages gettext)
+  #:use-module (gnu packages gl)
+  #:use-module (gnu packages glib)
+  #:use-module (gnu packages gnome)
+  #:use-module (gnu packages gnupg)
+  #:use-module (gnu packages golang)
+  #:use-module (gnu packages groff)
+  #:use-module (gnu packages gtk)
+  #:use-module (gnu packages guile)
   #:use-module (gnu packages hurd)
+  #:use-module (gnu packages image)
+  #:use-module (gnu packages imagemagick)
+  #:use-module (gnu packages inkscape)
+  #:use-module (gnu packages kerberos)
   #:use-module (gnu packages libbsd)
+  #:use-module (gnu packages libftdi)
+  #:use-module (gnu packages libunwind)
+  #:use-module (gnu packages libusb)
   #:use-module (gnu packages linux)
   #:use-module (gnu packages lua)
-  #:use-module (gnu packages guile)
-  #:use-module (gnu packages gettext)
-  #:use-module (gnu packages imagemagick)
-  #:use-module (gnu packages inkscape)
+  #:use-module (gnu packages man)
+  #:use-module (gnu packages mcrypt)
+  #:use-module (gnu packages mpi)
+  #:use-module (gnu packages ncurses)
+  #:use-module (gnu packages openldap)
+  #:use-module (gnu packages patchutils)
+  #:use-module (gnu packages pciutils)
   #:use-module (gnu packages pcre)
   #:use-module (gnu packages perl)
   #:use-module (gnu packages perl-check)
-  #:use-module (gnu packages tcl)
-  #:use-module (gnu packages compression)
-  #:use-module (gnu packages cross-base)
-  #:use-module (gnu packages tls)
-  #:use-module (gnu packages gnupg)
-  #:use-module (gnu packages bison)
-  #:use-module (gnu packages flex)
-  #:use-module (gnu packages gl)
-  #:use-module (gnu packages glib)
-  #:use-module (gnu packages openldap)
-  #:use-module (gnu packages mcrypt)
-  #:use-module (gnu packages patchutils)
   #:use-module (gnu packages pkg-config)
   #:use-module (gnu packages popt)
   #:use-module (gnu packages python)
@@ -104,28 +117,17 @@
   #:use-module (gnu packages python-web)
   #:use-module (gnu packages python-xyz)
   #:use-module (gnu packages qt)
+  #:use-module (gnu packages readline)
   #:use-module (gnu packages sphinx)
+  #:use-module (gnu packages tcl)
   #:use-module (gnu packages terminals)
   #:use-module (gnu packages texinfo)
-  #:use-module (gnu packages groff)
-  #:use-module (gnu packages pciutils)
-  #:use-module (gnu packages libunwind)
-  #:use-module (gnu packages libusb)
-  #:use-module (gnu packages libftdi)
-  #:use-module (gnu packages image)
-  #:use-module (gnu packages xorg)
+  #:use-module (gnu packages tls)
+  #:use-module (gnu packages version-control)
+  #:use-module (gnu packages web)
   #:use-module (gnu packages xdisorg)
-  #:use-module (gnu packages man)
-  #:use-module (gnu packages autotools)
-  #:use-module (gnu packages gnome)
-  #:use-module (gnu packages kerberos)
-  #:use-module (gnu packages gtk)
   #:use-module (gnu packages xml)
-  #:use-module (gnu packages boost)
-  #:use-module (gnu packages elf)
-  #:use-module (gnu packages mpi)
-  #:use-module (gnu packages version-control)
-  #:use-module (gnu packages web))
+  #:use-module (gnu packages xorg))
 
 (define-public aide
   (package
@@ -1605,7 +1607,7 @@ module slots, and the list of I/O ports (e.g. serial, parallel, USB).")
 (define-public acpica
   (package
     (name "acpica")
-    (version "20200214")
+    (version "20200326")
     (source (origin
               (method url-fetch)
               (uri (string-append
@@ -1613,7 +1615,7 @@ module slots, and the list of I/O ports (e.g. serial, parallel, USB).")
                     version ".tar.gz"))
               (sha256
                (base32
-                "0jdasziq184l3iqyp5vhrsbi6g89n10wr0ssliiz0xi3dqwsxcqk"))))
+                "0y08l6djjn87jmsp5kj0myjdb48000g20xlfs0a22jzzi383h3by"))))
     (build-system gnu-build-system)
     (native-inputs `(("flex" ,flex)
                      ("bison" ,bison)))
@@ -2496,7 +2498,7 @@ throughput (in the same interval).")
 (define-public thefuck
   (package
     (name "thefuck")
-    (version "3.29")
+    (version "3.30")
     (source
      (origin
        (method git-fetch)
@@ -2505,7 +2507,7 @@ throughput (in the same interval).")
              (commit version)))
        (file-name (git-file-name name version))
        (sha256
-        (base32 "1qhxwjjgrzpqrqjv7l2847ywpln76lyd6j8bl9gz2r6kl0fx2fqs"))
+        (base32 "0fnf78956pwhb9cgv1jmgypnkma5xzflkivfrkfiadbgin848yfg"))
        (patches (search-patches "thefuck-test-environ.patch"))))
     (build-system python-build-system)
     (arguments
@@ -2527,7 +2529,8 @@ throughput (in the same interval).")
        ("python-pyte" ,python-pyte)
        ("python-six" ,python-six)))
     (native-inputs
-     `(("python-mock" ,python-mock)
+     `(("go" ,go)
+       ("python-mock" ,python-mock)
        ("python-pytest" ,python-pytest)
        ("python-pytest-mock" ,python-pytest-mock)))
     (home-page "https://github.com/nvbn/thefuck")
@@ -2880,7 +2883,7 @@ buffers.")
        ("automake" ,automake)
        ("libtool" ,libtool)
        ("pkg-config" ,pkg-config)))
-    (home-page "https://cgit.freedesktop.org/xorg/app/intel-gpu-tools/")
+    (home-page "https://gitlab.freedesktop.org/drm/igt-gpu-tools")
     (synopsis "Tools for development and testing of the Intel DRM driver")
     (description "IGT GPU Tools is a collection of tools for development and
 testing of the Intel DRM driver.  There are many macro-level test suites that
@@ -2893,9 +2896,6 @@ Intel DRM Driver.")
     (supported-systems '("i686-linux" "x86_64-linux"))
     (license license:expat)))
 
-(define-public intel-gpu-tools
-  (deprecated-package "intel-gpu-tools" igt-gpu-tools))
-
 (define-public fabric
   (package
     (name "fabric")
@@ -2943,35 +2943,34 @@ tool for remote execution and deployment.")
     (license license:bsd-2)))
 
 (define-public neofetch
-  (let ((commit "501d6b7594296d9eac8943140f8581daf555873d"))
-    (package
-      (name "neofetch")
-      (version (git-version "6.1.0" "1" commit))
-      (source (origin
-                (method git-fetch)
-                (uri (git-reference
-                      (url "https://github.com/dylanaraps/neofetch")
-                      (commit commit)))
-                (file-name (git-file-name name version))
-                (sha256
-                 (base32
-                  "1h5md9jimyc6z4d7w66j27hn8qghzyxgpkh5h9dclzxpp5cs8whb"))))
-      (build-system gnu-build-system)
-      (arguments
-       `(#:tests? #f                      ; there are no tests
-         #:make-flags
-         (list (string-append "PREFIX=" %output))
-         #:phases
-         (modify-phases %standard-phases
-           (delete 'configure))))         ; no configure script
-      (home-page "https://github.com/dylanaraps/neofetch")
-      (synopsis "System information script")
-      (description "Neofetch is a command-line system information tool written in
+  (package
+    (name "neofetch")
+    (version "7.0.0")
+    (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://github.com/dylanaraps/neofetch")
+                    (commit version)))
+              (file-name (git-file-name name version))
+              (sha256
+               (base32
+                "0xc0fdc7n5bhqirh83agqiy8r14l14zwca07czvj8vgnsnfybslr"))))
+    (build-system gnu-build-system)
+    (arguments
+     `(#:tests? #f                      ; there are no tests
+       #:make-flags
+       (list (string-append "PREFIX=" %output))
+       #:phases
+       (modify-phases %standard-phases
+         (delete 'configure))))         ; no configure script
+    (home-page "https://github.com/dylanaraps/neofetch")
+    (synopsis "System information script")
+    (description "Neofetch is a command-line system information tool written in
 Bash.  Neofetch displays information about your system next to an image, your OS
 logo, or any ASCII file of your choice.  The main purpose of Neofetch is to be
 used in screenshots to show other users what operating system or distribution
 you are running, what theme or icon set you are using, etc.")
-      (license license:expat))))
+    (license license:expat)))
 
 (define-public screenfetch
   (package
diff --git a/gnu/packages/algebra.scm b/gnu/packages/algebra.scm
index e2e26c8c253..4ff766eef19 100644
--- a/gnu/packages/algebra.scm
+++ b/gnu/packages/algebra.scm
@@ -10,6 +10,7 @@
 ;;; Copyright © 2017, 2019 Eric Bavier <bavier@member.fsf.org>
 ;;; Copyright © 2019 Mathieu Othacehe <m.othacehe@gmail.com>
 ;;; Copyright © 2020 Björn Höfling <bjoern.hoefling@bjoernhoefling.de>
+;;; Copyright © 2020 Jakub Kądziołka <kuba@kadziolka.net>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -433,9 +434,6 @@ maple, mupad and the TI89.  It is available as a standalone program (graphic
 or text interfaces) or as a C++ library.")
     (license license:gpl3+)))
 
-(define-public giac-xcas
-  (deprecated-package "giac-xcas" giac))
-
 (define-public flint
   (package
    (name "flint")
@@ -562,42 +560,50 @@ these types and other mathematical functions.")
 (define-public ntl
   (package
    (name "ntl")
-   (version "9.7.0")
+   (version "11.4.3")
    (source (origin
             (method url-fetch)
-            (uri (string-append "http://shoup.net/ntl/ntl-"
+            (uri (string-append "https://shoup.net/ntl/ntl-"
                                 version ".tar.gz"))
-            (sha256 (base32
-                     "115frp5flyvw9wghz4zph1b3llmr5nbxk1skgsggckr81fh3gmxq"))))
+            (sha256
+             (base32
+              "1lisp3064rch3jaa2wrhy1s9kll7i3ka3d0y6lj6l3l4ckfcrhdp"))
+            (modules '((guix build utils)))
+            (snippet
+             '(begin
+                (delete-file-recursively "src/libtool-origin")
+                #t))))
    (build-system gnu-build-system)
    (native-inputs
     `(("libtool" ,libtool)
       ("perl" ,perl))) ; for configuration
-   ;; FIXME: Add optional input gf2x once available; then also add
-   ;; configure flag "NTL_GF2X_LIB=on".
    (inputs
-    `(("gmp" ,gmp)))
+    `(("gmp" ,gmp)
+      ("gf2x" ,gf2x)))
    (arguments
     `(#:phases
       (modify-phases %standard-phases
         (replace 'configure
-         (lambda* (#:key outputs #:allow-other-keys)
+         (lambda* (#:key inputs outputs #:allow-other-keys)
            (chdir "src")
-           (system* "./configure"
+           (invoke "./configure"
                     (string-append "PREFIX=" (assoc-ref outputs "out"))
+                    (string-append "LIBTOOL=" (assoc-ref inputs "libtool") "/bin/libtool")
+                    ;; set the library prefixes explicitly so that they get
+                    ;; embedded in the .la file
+                    (string-append "GMP_PREFIX=" (assoc-ref inputs "gmp"))
+                    (string-append "GF2X_PREFIX=" (assoc-ref inputs "gf2x"))
                     ;; Do not build especially for the build machine.
                     "NATIVE=off"
-                    ;; Also do not tune to the build machine.
-                    "WIZARD=off"
-                    "SHARED=on")
-           #t)))))
+                    "NTL_GF2X_LIB=on"
+                    "SHARED=on"))))))
    (synopsis "C++ library for number theory")
    (description
     "NTL is a C++ library providing data structures and algorithms
 for manipulating signed, arbitrary length integers, and for vectors,
 matrices, and polynomials over the integers and over finite fields.")
    (license license:gpl2+)
-   (home-page "http://shoup.net/ntl/")))
+   (home-page "https://shoup.net/ntl/")))
 
 (define-public singular
   (package
@@ -1437,8 +1443,7 @@ of M4RI from F_2 to F_{2^e}.")
        ("automake" ,automake)
        ("libtool" ,libtool)))
     (inputs
-     `(("gmp" ,gmp)
-       ("ntl" ,ntl)
+     `(("ntl" ,ntl)
        ("pari-gp" ,pari-gp)))
     (synopsis "Ranks of elliptic curves and modular symbols")
     (description "The eclib package includes mwrank (for 2-descent on
diff --git a/gnu/packages/assembly.scm b/gnu/packages/assembly.scm
index 0a24220e184..9ebfe834bfd 100644
--- a/gnu/packages/assembly.scm
+++ b/gnu/packages/assembly.scm
@@ -259,7 +259,7 @@ runtime")
 (define-public rgbds
   (package
     (name "rgbds")
-    (version "0.3.9")
+    (version "0.3.10")
     (source (origin
               (method git-fetch)
               (uri (git-reference
@@ -268,7 +268,7 @@ runtime")
               (file-name (git-file-name name version))
               (sha256
                (base32
-                "0pzd9ig3ahpgq7jbj82grllxx1v01d620insr2m8h0c6jj25n5hv"))))
+                "0752fbffxgxyf3jw2iij88l05dqhppgcxy7dvk82hp4wdg4cflpq"))))
     (build-system gnu-build-system)
     (arguments
      `(#:phases
diff --git a/gnu/packages/bioconductor.scm b/gnu/packages/bioconductor.scm
index b62a6188d12..28522e7c13c 100644
--- a/gnu/packages/bioconductor.scm
+++ b/gnu/packages/bioconductor.scm
@@ -7302,14 +7302,14 @@ access.")
 (define-public r-multiassayexperiment
   (package
     (name "r-multiassayexperiment")
-    (version "1.12.5")
+    (version "1.12.6")
     (source
      (origin
        (method url-fetch)
        (uri (bioconductor-uri "MultiAssayExperiment" version))
        (sha256
         (base32
-         "0a7zsq3adg8rph1w2qr75bpmrq53j99rsypmxj9w5mz9q23r2qlr"))))
+         "174vzlxsyayb5il77cb3zzgszxl3l0wkprc9w6pgz4yv5ix13adi"))))
     (properties
      `((upstream-name . "MultiAssayExperiment")))
     (build-system r-build-system)
diff --git a/gnu/packages/cpp.scm b/gnu/packages/cpp.scm
index ce816a528ad..84a7e68b889 100644
--- a/gnu/packages/cpp.scm
+++ b/gnu/packages/cpp.scm
@@ -1,6 +1,6 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2017 Ethan R. Jones <doubleplusgood23@gmail.com>
-;;; Copyright © 2018, 2019 Tobias Geerinckx-Rice <me@tobias.gr>
+;;; Copyright © 2018, 2019, 2020 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;; Copyright © 2018 Fis Trivial <ybbs.daans@hotmail.com>
 ;;; Copyright © 2018 Ludovic Courtès <ludo@gnu.org>
 ;;; Copyright © 2019 Mathieu Othacehe <m.othacehe@gmail.com>
@@ -262,7 +262,7 @@ intuitive syntax and trivial integration.")
 (define-public xtl
   (package
     (name "xtl")
-    (version "0.6.8")
+    (version "0.6.13")
     (source (origin
               (method git-fetch)
               (uri
@@ -271,7 +271,7 @@ intuitive syntax and trivial integration.")
                 (commit version)))
               (sha256
                (base32
-                "13gm8vm1b9nzvlcc632f9khnjw1xdjqj6c7k51r173y1hlk0div7"))
+                "0py70lm2i3sxzpgca2cic8zfn6dn18q837h76a5fchl2c0kpxm91"))
               (file-name (git-file-name name version))))
     (native-inputs
      `(("googletest" ,googletest)
diff --git a/gnu/packages/cran.scm b/gnu/packages/cran.scm
index 129c5c07c81..9d715020176 100644
--- a/gnu/packages/cran.scm
+++ b/gnu/packages/cran.scm
@@ -677,7 +677,11 @@ LaTeX.")
                (("if \\(!grepl\\(\"mingw\".*")
                 "if (FALSE)\n"))
              (substitute* "src/handle.c"
-               (("#ifdef _WIN32") "#if 1"))
+               (("/\\* Only set" m)
+                (string-append "\
+const char *_ca_bundle = getenv(\"CURL_CA_BUNDLE\");
+if(_ca_bundle != NULL) { curl_easy_setopt(handle, CURLOPT_CAINFO, _ca_bundle); }
+" m)))
              #t)))))
     (inputs
      `(("libcurl" ,curl)
@@ -2107,14 +2111,14 @@ package also provides a C++ API, that works with or without Rcpp.")
 (define-public r-ggally
   (package
     (name "r-ggally")
-    (version "1.4.0")
+    (version "1.5.0")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "GGally" version))
        (sha256
         (base32
-         "1zjmcc5bzagvy7c5cmdcl39xmx07fwi98yrj4i05w7y40kqcsiws"))))
+         "082s321zspg5al6acigwrhg4fsrmkkk5caabg662qbcy8v6n34h6"))))
     (properties `((upstream-name . "GGally")))
     (build-system r-build-system)
     (inputs
@@ -6086,14 +6090,14 @@ results to the user.")
 (define-public r-hdf5r
   (package
     (name "r-hdf5r")
-    (version "1.3.1")
+    (version "1.3.2")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "hdf5r" version))
        (sha256
         (base32
-         "0hvi2cvyv6zlxgpawnmsihxclp2ln88slbrnmaxagmjswskxsrpx"))))
+         "0c2p06k9bp9rf0fyavnxw5d8jr2bbgx3gjblahz581cpvsfksj9i"))))
     (build-system r-build-system)
     (inputs
      `(("hdf5" ,hdf5)
@@ -6101,6 +6105,8 @@ results to the user.")
     (propagated-inputs
      `(("r-bit64" ,r-bit64)
        ("r-r6" ,r-r6)))
+    (native-inputs
+     `(("r-knitr" ,r-knitr)))
     (home-page "https://hhoeflin.github.io/hdf5r")
     (synopsis "Interface to the HDF5 binary data format")
     (description
@@ -8512,18 +8518,20 @@ differentiation.")
 (define-public r-bayestestr
   (package
     (name "r-bayestestr")
-    (version "0.5.2")
+    (version "0.5.3")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "bayestestR" version))
        (sha256
         (base32
-         "1l0kqw793d8fnk0745fllmqwjwnj9srvqzv4baq5s05ls1gbi2mw"))))
+         "1q24qh5p6bz4nbf4546kckh7d518x5pm1yhhbc8fwcnbca4kgqjz"))))
     (properties `((upstream-name . "bayestestR")))
     (build-system r-build-system)
     (propagated-inputs
      `(("r-insight" ,r-insight)))
+    (native-inputs
+     `(("r-knitr" ,r-knitr)))
     (home-page "https://github.com/easystats/bayestestR")
     (synopsis "Describe Bayesian models and posterior distributions")
     (description
@@ -13178,14 +13186,14 @@ tessellation.")
 (define-public r-sf
   (package
     (name "r-sf")
-    (version "0.8-1")
+    (version "0.9-0")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "sf" version))
        (sha256
         (base32
-         "17wyv74m1ppc3s5jdv60r74jj23nidxpzl46vjhfclfhnpvm7sx9"))))
+         "117r9l3v7nkdj9bfy6qr0yz0gd5bv0pwnkc9vk2gv3xqj0h1fpf6"))))
     (build-system r-build-system)
     (inputs
      `(("gdal" ,gdal)
@@ -13198,7 +13206,9 @@ tessellation.")
        ("r-magrittr" ,r-magrittr)
        ("r-rcpp" ,r-rcpp)
        ("r-units" ,r-units)))
-    (native-inputs `(("pkg-config" ,pkg-config)))
+    (native-inputs
+     `(("pkg-config" ,pkg-config)
+       ("r-knitr" ,r-knitr)))
     (home-page "https://github.com/r-spatial/sf/")
     (synopsis "Simple features for R")
     (description
@@ -13848,14 +13858,14 @@ the corresponding outputs (tables and graphs).")
 (define-public r-rjava
   (package
     (name "r-rjava")
-    (version "0.9-11")
+    (version "0.9-12")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "rJava" version))
        (sha256
         (base32
-         "0s9cjy1wh7snmbqwznh8f1r4ipylr7mgda4a979z963a8lqy32n2"))))
+         "03vv0pj6san03c51iyqsyb1rwh3097dfpl2s8iswzzmc7k3shj12"))))
     (properties `((upstream-name . "rJava")))
     (build-system r-build-system)
     (arguments
@@ -15355,14 +15365,14 @@ the current document.")
 (define-public r-xgboost
   (package
     (name "r-xgboost")
-    (version "1.0.0.1")
+    (version "1.0.0.2")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "xgboost" version))
        (sha256
         (base32
-         "0fx5qjpjjirzhplddqmxlysyqszp79w74x00b5shp6p2lzy6yd9a"))))
+         "1ld2w51c5fy3bl0kvjn1iplffc4lmin9s9zz5xx7xsm44d6j6kzd"))))
     (build-system r-build-system)
     (propagated-inputs
      `(("r-data-table" ,r-data-table)
diff --git a/gnu/packages/crypto.scm b/gnu/packages/crypto.scm
index 2b77a79c2fb..bb684ddb538 100644
--- a/gnu/packages/crypto.scm
+++ b/gnu/packages/crypto.scm
@@ -1089,8 +1089,8 @@ API.")
     (license license:asl2.0)))
 
 (define-public hash-extender
-  (let ((commit "9ecef26809a1ceea2a455f6f591b004298df551b")
-        (revision "1"))
+  (let ((commit "cb8aaee49f93e9c0d2f03eb3cafb429c9eed723d")
+        (revision "2"))
     (package
       (name "hash-extender")
       (version (git-version "0.0" revision commit))
@@ -1101,10 +1101,8 @@ API.")
                       (commit commit)))
                 (sha256
                  (base32
-                  "0fqy3d559zgf71w39py0931d8na0ylils45r8zs6r79wgr6qn78c"))
-                (file-name (git-file-name name version))
-                (patches
-                  (search-patches "hash-extender-test-suite.patch"))))
+                  "1fj118566hr1wv03az2w0iqknazsqqkak0mvlcvwpgr6midjqi9b"))
+                (file-name (git-file-name name version))))
       (build-system gnu-build-system)
       (arguments
        `(#:phases
diff --git a/gnu/packages/cybersecurity.scm b/gnu/packages/cybersecurity.scm
new file mode 100644
index 00000000000..aedac03b8a9
--- /dev/null
+++ b/gnu/packages/cybersecurity.scm
@@ -0,0 +1,46 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2020 Jakub Kądziołka <kuba@kadziolka.net>
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; GNU Guix is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (gnu packages cybersecurity)
+  #:use-module (guix download)
+  #:use-module (guix packages)
+  #:use-module ((guix licenses) #:prefix license:)
+  #:use-module (guix build-system python)
+  #:use-module (gnu packages engineering))
+
+(define-public ropgadget
+  (package
+    (name "ropgadget")
+    (version "6.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (pypi-uri "ROPGadget" version))
+       (sha256
+        (base32
+         "0idiicgpijar9l9kqmfdh865c2mkfgxg0q7lpz77jc09l6q0afjh"))))
+    (build-system python-build-system)
+    (propagated-inputs
+     `(("python-capstone" ,python-capstone)))
+    (home-page "http://shell-storm.org/project/ROPgadget/")
+    (synopsis "Semiautomatic return oriented programming")
+    (description
+     "This tool lets you search for @acronym{ROP, Return Oriented Programming}
+gadgets in binaries.  Some facilities are included for automatically generating
+chains of gadgets to execute system calls.")
+    (license license:bsd-3)))
diff --git a/gnu/packages/dictionaries.scm b/gnu/packages/dictionaries.scm
index d8e30a55245..d481b139a5c 100644
--- a/gnu/packages/dictionaries.scm
+++ b/gnu/packages/dictionaries.scm
@@ -205,14 +205,14 @@ It comes with a German-English dictionary with approximately 270,000 entries.")
 (define-public grammalecte
   (package
     (name "grammalecte")
-    (version "1.7.0")
+    (version "1.8.0")
     (source
      (origin
        (method url-fetch/zipbomb)
        (uri (string-append "https://grammalecte.net/grammalecte/zip/"
                            "Grammalecte-fr-v" version ".zip"))
        (sha256
-        (base32 "0wb126mqnq9ns6gzmhzljc6iqywdkpzvr8xny5s3khd10ki4lxl3"))))
+        (base32 "06z2na1zs5q6vla45q5b8fzjwpckanmwh42r8in8vhb7a8v2fkyp"))))
     (build-system python-build-system)
     (home-page "https://grammalecte.net")
     (synopsis "French spelling and grammar checker")
diff --git a/gnu/packages/education.scm b/gnu/packages/education.scm
index 7c84d832c00..836fc2b525b 100644
--- a/gnu/packages/education.scm
+++ b/gnu/packages/education.scm
@@ -602,14 +602,14 @@ Portuguese, Spanish and Italian.")
 (define-public fet
   (package
     (name "fet")
-    (version "5.43.2")
+    (version "5.44.0")
     (source
      (origin
        (method url-fetch)
        (uri (string-append "https://www.lalescu.ro/liviu/fet/download/"
                            "fet-" version ".tar.bz2"))
        (sha256
-        (base32 "111ijwdpdnavi2jjp8jqnwkgi1b9n79svkfw68fmga0z7d3nd62g"))))
+        (base32 "13q3b0g1zz885g15gir8fbalvix8sy42v1p429h0751490wq5c3h"))))
     (build-system gnu-build-system)
     (arguments
      `(#:phases
diff --git a/gnu/packages/emacs-xyz.scm b/gnu/packages/emacs-xyz.scm
index d97dc49ce21..feea43b5003 100644
--- a/gnu/packages/emacs-xyz.scm
+++ b/gnu/packages/emacs-xyz.scm
@@ -43,7 +43,7 @@
 ;;; Copyright © 2018, 2019 Pierre Langlois <pierre.langlois@gmx.com>
 ;;; Copyright © 2018, 2019, 2020 Brett Gilio <brettg@gnu.org>
 ;;; Copyright © 2019, 2020 Dimakakos Dimos <bendersteed@teknik.io>
-;;; Copyright © 2019 Brian Leung <bkleung89@gmail.com>
+;;; Copyright © 2019, 2020 Brian Leung <bkleung89@gmail.com>
 ;;; Copyright © 2019 mikadoZero <mikadozero@yandex.com>
 ;;; Copyright © 2019 Gabriel Hondet <gabrielhondet@gmail.com>
 ;;; Copyright © 2019, 2020 Joseph LaFreniere <joseph@lafreniere.xyz>
@@ -51,7 +51,7 @@
 ;;; Copyright © 2019 Baptiste Strazzulla <bstrazzull@hotmail.fr>
 ;;; Copyright © 2019 Giacomo Leidi <goodoldpaul@autistici.org>
 ;;; Copyright © 2019 Jens Mølgaard <jens@zete.tk>
-;;; Copyright © 2019, 2020 Amin Bandali <mab@gnu.org>
+;;; Copyright © 2019, 2020 Amin Bandali <bandali@gnu.org>
 ;;; Copyright © 2019 Jelle Licht <jlicht@fsfe.org>
 ;;; Copyright © 2019 Björn Höfling <bjoern.hoefling@bjoernhoefling.de>
 ;;; Copyright © 2019 Stephen Webber <montokapro@gmail.com>
@@ -108,6 +108,7 @@
   #:use-module (gnu packages guile)
   #:use-module (gnu packages gtk)
   #:use-module (gnu packages gnome)
+  #:use-module (gnu packages haskell-apps)
   #:use-module (gnu packages ncurses)
   #:use-module (gnu packages python)
   #:use-module (gnu packages python-xyz)
@@ -211,9 +212,6 @@ implementation, Emacs and, ultimately, the schemer, giving them access to live
 metadata.")
     (license license:bsd-3)))
 
-(define-public geiser
-  (deprecated-package "geiser" emacs-geiser))
-
 (define-public emacs-paredit
   (package
     (name "emacs-paredit")
@@ -239,9 +237,6 @@ for those who may want transient periods of unbalanced parentheses, such as
 when typing parentheses directly or commenting out code line by line.")
     (license license:gpl3+)))
 
-(define-public paredit
-  (deprecated-package "paredit" emacs-paredit))
-
 (define-public git-modes
   (package
     (name "emacs-git-modes")
@@ -263,9 +258,6 @@ when typing parentheses directly or commenting out code line by line.")
 configuration files, such as .gitattributes, .gitignore, and .git/config.")
     (license license:gpl3+)))
 
-(define-public git-modes/old-name
-  (deprecated-package "git-modes" git-modes))
-
 (define-public emacs-with-editor
   (package
     (name "emacs-with-editor")
@@ -395,9 +387,6 @@ cherry picking, reverting, merging, rebasing, and other common Git
 operations.")
       (license license:gpl3+))))
 
-(define-public magit
-  (deprecated-package "magit" emacs-magit))
-
 (define-public emacs-magit-svn
   (let ((commit "9e33ceee32f665db59909e1c00a667ccdd04178f"))
     (package
@@ -424,9 +413,6 @@ operations.")
 support for Git-SVN.")
       (license license:gpl3+))))
 
-(define-public magit-svn
-  (deprecated-package "magit-svn" emacs-magit-svn))
-
 (define-public emacs-magit-popup
   (package
     (name "emacs-magit-popup")
@@ -768,9 +754,6 @@ replacement.")
 programs.")
     (license license:gpl3+)))
 
-(define-public haskell-mode
-  (deprecated-package "haskell-mode" emacs-haskell-mode))
-
 (define-public emacs-dante
   (let ((commit "38b589417294c7ea44bf65b73b8046d950f9531b")
         (revision "1"))
@@ -1383,10 +1366,6 @@ light user interface.")
     (home-page "https://www.gnu.org/software/emms/")
     (license license:gpl3+)))
 
-(define-public emacs-emms-player-mpv
-  ;; A new mpv backend is included in Emms from 5.0.
-  (deprecated-package "emacs-emms-player-mpv" emacs-emms))
-
 (define-public emacs-emms-mode-line-cycle
   (package
     (name "emacs-emms-mode-line-cycle")
@@ -1485,9 +1464,6 @@ like.  It can be linked with various Emacs mail clients (Message and Mail
 mode, Rmail, Gnus, MH-E, and VM).  BBDB is fully customizable.")
     (license license:gpl3+)))
 
-(define-public bbdb
-  (deprecated-package "bbdb" emacs-bbdb))
-
 (define-public emacs-aggressive-indent
   (package
     (name "emacs-aggressive-indent")
@@ -3367,27 +3343,30 @@ for Flow files.")
 (define-public emacs-flycheck-grammalecte
   (package
     (name "emacs-flycheck-grammalecte")
-    (version "0.9")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append "https://git.deparis.io/"
-                                  "flycheck-grammalecte/snapshot/"
-                                  "flycheck-grammalecte-" version ".tar.xz"))
-              (sha256
-               (base32
-                "0wjm9xyra870pci4bcrbnc9x66x18mi7iz08rkxa4clxv28xzryb"))))
+    (version "1.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://git.deparis.io/"
+                           "flycheck-grammalecte/snapshot/"
+                           "flycheck-grammalecte-" version ".tar.xz"))
+       (sha256
+        (base32 "02wxaw228dia8cps0v02327hrrribfqb4601qggjpi4l4ms1lf8b"))))
     (build-system emacs-build-system)
     (arguments
      `(#:include '("\\.(el|py)$")
        #:phases
        (modify-phases %standard-phases
-         (add-after 'unpack 'fix-python
-           ;; Hardcode python3 executable in the Emacs library.
+         (add-after 'unpack 'set-external-executables
+           ;; Hardcode python3 and curl executables in the Emacs library.
            (lambda* (#:key inputs #:allow-other-keys)
              (let ((python3 (string-append (assoc-ref inputs "python")
-                                           "/bin/python3")))
+                                           "/bin/python3"))
+                   (curl (string-append (assoc-ref inputs "curl")
+                                        "/bin/curl")))
                (substitute* "flycheck-grammalecte.el"
-                 (("python3") python3))
+                 (("\"python3?") (string-append "\"" python3))
+                 (("\"curl") (string-append "\"" curl)))
                #t)))
          (add-after 'install 'link-to-grammalecte
            ;; The package expects grammalecte to be in a sub-directory.
@@ -3397,14 +3376,15 @@ for Flow files.")
                    (out (assoc-ref outputs "out"))
                    (version ,(version-major+minor (package-version python))))
                (with-directory-excursion
-                 (string-append out "/share/emacs/site-lisp")
+                   (string-append out "/share/emacs/site-lisp")
                  (symlink (string-append grammalecte "/lib/"
                                          "python" version "/site-packages/"
                                          "grammalecte")
                           "grammalecte"))
                #t))))))
     (inputs
-     `(("grammalecte" ,grammalecte)
+     `(("curl" ,curl)
+       ("grammalecte" ,grammalecte)
        ("python" ,python)))
     (propagated-inputs
      `(("emacs-flycheck" ,emacs-flycheck)))
@@ -10055,9 +10035,6 @@ using ERT.  It assumes a certain test structure setup and can therefore make
 running tests easier.")
     (license license:gpl3+)))
 
-(define-public ert-runner
-  (deprecated-package "ert-runner" emacs-ert-runner))
-
 (define-public emacs-xtest
   (package
     (name "emacs-xtest")
@@ -11421,9 +11398,6 @@ Groovy source files, REPL integration with run-groovy and Grails project
 navigation with the grails mode.")
     (license license:gpl3+)))
 
-(define-public groovy-emacs-modes
-  (deprecated-package "groovy-emacs-modes" emacs-groovy-modes))
-
 (define-public emacs-org-tree-slide
   (let ((commit "036a36eec1cf712d3db155572aed325daa372eb5")
         (revision "2"))
@@ -14040,10 +14014,6 @@ functions.")
 time is being spent during Emacs startup in order to optimize startup time.")
     (license license:gpl3+)))
 
-(define-public emacs-emms-player-simple-mpv
-  ;; A new mpv backend is included in Emms from 5.0.
-  (deprecated-package "emacs-emms-player-simple-mpv" emacs-emms))
-
 (define-public emacs-magit-gerrit
   (let ((version "0.3")
         (revision "1")
@@ -15202,10 +15172,6 @@ and the Zotero research assistant: Insertion of links to Zotero items into an
 Org-mode file, and citations of Zotero items in Pandoc Markdown files.")
     (license license:gpl3+)))
 
-(define-public emacs-evil-ediff
-  ;; Evil-Ediff is included in Evil Collection from 20180617.
-  (deprecated-package "emacs-evil-ediff" emacs-evil-collection))
-
 (define-public emacs-evil-magit
   (let ((commit "4b66a1db8285457147a5436f209391016a819ea1")
         (revision "3"))
@@ -15242,10 +15208,6 @@ See the README at @url{https://github.com/justbur/evil-magit} for a table
 describing the key binding changes.")
       (license license:gpl3+))))
 
-(define-public emacs-evil-mu4e
-  ;; Evil-mu4e is included in Evil Collection from 20180617.
-  (deprecated-package "emacs-evil-mu4e" emacs-evil-collection))
-
 (define-public emacs-evil-multiedit
   (package
     (name "emacs-evil-multiedit")
@@ -15875,10 +15837,6 @@ file.")
 @end itemize")
       (license license:gpl3+))))
 
-(define-public emacs-wgrep-helm
-  ;; `emacs-wgrep-helm' was mistakenly added.
-  (deprecated-package "emacs-wgrep-helm" emacs-wgrep))
-
 (define-public emacs-mu4e-conversation
   (let ((commit "98110bb9c300fc9866dee8e0023355f9f79c9b96")
         (revision "5"))
@@ -16071,6 +16029,32 @@ text in neighboring sections.")
 Pandoc, the document-conversion tool.")
     (license license:bsd-3)))
 
+(define-public emacs-hlint-refactor-mode
+  (let ((commit "c4307f86aad6d02e32e9b30cb6edc115584c791c")
+        (revision "1"))
+    (package
+      (name "emacs-hlint-refactor-mode")
+      (version (git-version "0.0.1" revision commit))
+      (source
+       (origin
+         (method git-fetch)
+         (uri (git-reference
+               (url "https://github.com/mpickering/hlint-refactor-mode")
+               (commit commit)))
+         (file-name (git-file-name name version))
+         (sha256
+          (base32
+           "1c71w9s34n0i7mm4njchxn6s3ri1y6mh3akgbg4nq41d42h8iap3"))))
+      (build-system emacs-build-system)
+      (propagated-inputs
+       `(("apply-refact" ,apply-refact)
+         ("hlint" ,hlint)))
+      (home-page "https://github.com/mpickering/hlint-refactor-mode")
+      (synopsis "Emacs bindings for @code{hlint}'s @code{--refactor} option")
+      (description "This package applies refactoring suggestions from
+@code{hlint}.")
+      (license license:expat))))
+
 (define-public emacs-ccls
   (let ((commit "aab3e31fd716daf59f9794e62d473357263e8cc0")
         (revision "4"))
@@ -16297,10 +16281,10 @@ text-tree applications inside GNU Emacs.  It consists of 2 subprojects:
       (license license:gpl3))))
 
 (define-public emacs-helm-org-contacts
-  (let ((commit "0af703bd9a43032b89fdf5559673151d1ac2fffc"))
+  (let ((commit "e7f11615802df55bb8b679450b5a5ef82a9081f9"))
     (package
       (name "emacs-helm-org-contacts")
-      (version (git-version "20180707" "1" commit))
+      (version (git-version "20200310" "1" commit))
       (source
        (origin
          (method git-fetch)
@@ -16310,7 +16294,7 @@ text-tree applications inside GNU Emacs.  It consists of 2 subprojects:
          (file-name (git-file-name name version))
          (sha256
           (base32
-           "1cl7cm2ic9pg4vc9cdh84vzjj1x2lpd5ymimiva8h4l17kiphk4s"))))
+           "06a1gbrq3qcfsn0kyv4i24x1xxfrrwqa3kgfj4xa4va88q2vqyb5"))))
       (build-system emacs-build-system)
       (propagated-inputs
        `(("emacs-dash" ,emacs-dash)
@@ -21649,9 +21633,11 @@ supports generation of phonetic and numeric passwords.")
          "1vmazjrfcsa9aa9aw8bq5sazdhqvhxyj837dyw5lmh8gk7z0xdaa"))))
     (build-system emacs-build-system)
     (synopsis "Elisp functions for reading and parsing CSV files")
-    (description "@code{csv.el} provides functions for reading and parsing CSV (Comma
-Separated Value) files.  It follows the format as defined in RFC 4180 \"Common
-Format and MIME Type for CSV Files\" (@url{http://tools.ietf.org/html/rfc4180}).")
+    (description
+     "@code{csv.el} provides functions for reading and parsing @acronym{CSV,
+Comma-Separated Values} files.  It follows the format as defined in RFC 4180
+@emph{Common Format and MIME Type for CSV
+Files} (@url{http://tools.ietf.org/html/rfc4180}).")
     (license license:gpl3+)))
 
 (define-public emacs-org-journal
diff --git a/gnu/packages/emacs.scm b/gnu/packages/emacs.scm
index 0938dabf1ec..359bb76ae2a 100644
--- a/gnu/packages/emacs.scm
+++ b/gnu/packages/emacs.scm
@@ -19,7 +19,7 @@
 ;;; Copyright © 2019 Jesse John Gildersleve <jessejohngildersleve@zohomail.eu>
 ;;; Copyright © 2019 Valentin Ignatev <valentignatev@gmail.com>
 ;;; Copyright © 2019 Leo Prikler <leo.prikler@student.tugraz.at>
-;;; Copyright © 2019 Amin Bandali <mab@gnu.org>
+;;; Copyright © 2019 Amin Bandali <bandali@gnu.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -290,6 +290,8 @@ languages.")
              #t))))
       (arguments
        (substitute-keyword-arguments (package-arguments emacs)
+         ((#:configure-flags flags)
+          `(cons* "--with-harfbuzz" ,flags))
          ((#:phases phases)
           `(modify-phases ,phases
              ;; The 'reset-gzip-timestamps phase will throw a
@@ -318,6 +320,7 @@ languages.")
                    #t)))))))
       (inputs
        `(("jansson" ,jansson)
+         ("harfbuzz" ,harfbuzz)
          ,@(package-inputs emacs)))
       (native-inputs
        `(("autoconf" ,autoconf)      ; needed when building from trunk
diff --git a/gnu/packages/emulators.scm b/gnu/packages/emulators.scm
index 3591b1740c9..2fcb176ae4d 100644
--- a/gnu/packages/emulators.scm
+++ b/gnu/packages/emulators.scm
@@ -511,7 +511,8 @@ and Game Boy Color games.")
                (with-directory-excursion "build/bin/SDL"
                  (install-file "sameboy" bin)
                  (delete-file "sameboy")
-                 (copy-recursively "." data))))))))
+                 (copy-recursively "." data))
+               #t))))))
     (home-page "https://sameboy.github.io/")
     (synopsis "Accurate Game Boy, Game Boy Color and Super Game Boy emulator")
     (description "SameBoy is a user friendly Game Boy, Game Boy Color
diff --git a/gnu/packages/engineering.scm b/gnu/packages/engineering.scm
index f8ff1bbf0ee..55af90bc822 100644
--- a/gnu/packages/engineering.scm
+++ b/gnu/packages/engineering.scm
@@ -791,9 +791,6 @@ language.")
       (license (list license:mpl2.0               ;library
                      license:gpl2+)))))           ;Guile bindings and GUI
 
-(define-public ao
-  (deprecated-package "ao-cad" libfive))
-
 ;; TODO Add doc https://gitlab.com/kicad/services/kicad-doc/-/tree/master
 (define-public kicad
   (package
diff --git a/gnu/packages/finance.scm b/gnu/packages/finance.scm
index 43eda97f1a8..7bf8f4fc6e2 100644
--- a/gnu/packages/finance.scm
+++ b/gnu/packages/finance.scm
@@ -744,9 +744,6 @@ the Monero command line client and daemon.")
 the Monero GUI client.")
     (license license:bsd-3)))
 
-(define-public monero-core
-  (deprecated-package "monero-core" monero-gui))
-
 (define-public python-trezor-agent
   (package
     (name "python-trezor-agent")
diff --git a/gnu/packages/firmware.scm b/gnu/packages/firmware.scm
index 2dff39f7864..51eae2ad4cc 100644
--- a/gnu/packages/firmware.scm
+++ b/gnu/packages/firmware.scm
@@ -92,7 +92,7 @@
                      ("cross-binutils" ,(cross-binutils "xtensa-elf" binutils-2.33))
                      ("cmake" ,cmake-minimal)
                      ("perl" ,perl)))
-    (home-page "http://wireless.kernel.org/en/users/Drivers/ath9k_htc")
+    (home-page "https://wireless.wiki.kernel.org/en/users/Drivers/ath9k_htc")
     (synopsis "Firmware for the Atheros AR7010 and AR9271 USB 802.11n NICs")
     (description
      "This is the firmware for the Qualcomm Atheros AR7010 and AR9271 USB
diff --git a/gnu/packages/fonts.scm b/gnu/packages/fonts.scm
index 5fb6bbbe186..527f2cbbd6d 100644
--- a/gnu/packages/fonts.scm
+++ b/gnu/packages/fonts.scm
@@ -29,7 +29,8 @@
 ;;; Copyright © 2019 Alva <alva@skogen.is>
 ;;; Copyright © 2019 Alexandros Theodotou <alex@zrythm.org>
 ;;; Copyright © 2020 Damien Cassou <damien@cassou.me>
-;;; Copyright © 2020 Amin Bandali <mab@gnu.org>
+;;; Copyright © 2020 Amin Bandali <bandali@gnu.org>
+;;; Copyright © 2020 Michael Rohleder <mike@rohleder.de>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -1569,7 +1570,7 @@ This package provides the TrueType fonts.")
 (define-public font-jetbrains-mono
   (package
     (name "font-jetbrains-mono")
-    (version "1.0.2")
+    (version "1.0.3")
     (source
      (origin
        (method url-fetch)
@@ -1577,7 +1578,7 @@ This package provides the TrueType fonts.")
         (string-append "https://download.jetbrains.com/fonts/"
                        "JetBrainsMono-" version ".zip"))
        (sha256
-        (base32 "0qlp4902i1v6ni04b6gdip8rxw6wpkdk9w7dir1yn9an5mvbkyar"))))
+        (base32 "0zvhwmpdwpm4vywmm6i9a4najz0c7vfi411yikgkd66l5hwd1p6f"))))
     (build-system font-build-system)
     (home-page "https://www.jetbrains.com/lp/mono/")
     (synopsis "Mono typeface for developers")
diff --git a/gnu/packages/fpga.scm b/gnu/packages/fpga.scm
index 8f34ef82828..ed5bc14e310 100644
--- a/gnu/packages/fpga.scm
+++ b/gnu/packages/fpga.scm
@@ -2,7 +2,7 @@
 ;;; Copyright © 2016 Danny Milosavljevic <dannym@scratchpost.org>
 ;;; Copyright © 2016, 2017 Theodoros Foradis <theodoros@foradis.org>
 ;;; Copyright © 2018, 2019, 2020 Tobias Geerinckx-Rice <me@tobias.gr>
-;;; Copyright © 2019 Amin Bandali <mab@gnu.org>
+;;; Copyright © 2019 Amin Bandali <bandali@gnu.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -271,6 +271,7 @@ Includes the actual FTDI connector.")
         (uri (git-reference
                (url "git://github.com/YosysHQ/nextpnr")
                (commit commit)))
+        (file-name (git-file-name name version))
         (sha256
           (base32
             "0g2ar1z89b31qw5vgqj2rrcv9rzncs94184dgcsrz19p866654mf"))))
@@ -289,8 +290,8 @@ Includes the actual FTDI connector.")
                                             "/share/icebox"))
         #:tests? #f))
     (synopsis "Place-and-Route tool for FPGAs")
-    (description "nextpnr aims to be a vendor neutral, timing driven,
-FOSS FPGA place and route tool.  ")
+    (description "Nextpnr aims to be a vendor neutral, timing driven,
+FOSS FPGA place and route tool.")
     (home-page "https://github.com/YosysHQ/nextpnr")
     (license license:expat))))
 
diff --git a/gnu/packages/games.scm b/gnu/packages/games.scm
index 0fc50ed2713..7555a0d800b 100644
--- a/gnu/packages/games.scm
+++ b/gnu/packages/games.scm
@@ -329,9 +329,6 @@ the more advanced player there are new game modes and a wide variety of
 physics settings to tweak as well.")
     (license license:gpl2+)))
 
-(define-public armagetron-advanced
-  (deprecated-package "armagetron-advanced" armagetronad))
-
 (define-public bastet
   (package
     (name "bastet")
@@ -461,9 +458,6 @@ things far stranger and deadlier, and against the others like yourself, that
 want what you have.")
       (license license:cc-by-sa3.0))))
 
-(define-public cataclysm-dark-days-ahead
-  (deprecated-package "cataclysm-dark-days-ahead" cataclysm-dda))
-
 (define-public corsix-th
   (package
     (name "corsix-th")
@@ -1151,9 +1145,6 @@ beginners and advanced players.  In addition to a command-line interface, it
 also features an attractive, 3D representation of the playing board.")
     (license license:gpl3+)))
 
-(define-public gnubackgammon
-  (deprecated-package "gnubackgammon" gnubg))
-
 (define-public gnubik
   (package
     (name "gnubik")
@@ -1704,9 +1695,6 @@ them, called Jean Raymond, found an old church in which to hide, not knowing
 that beneath its ruins lay buried an ancient evil.")
     (license license:gpl3)))
 
-(define-public l-abbaye-des-morts
-  (deprecated-package "l-abbaye-des-morts" abbaye))
-
 (define-public angband
   (package
     (name "angband")
@@ -2825,9 +2813,6 @@ experience and advance levels, and are carried over from one scenario to the
 next campaign.")
     (license license:gpl2+)))
 
-(define-public the-battle-for-wesnoth
-  (deprecated-package "the-battle-for-wesnoth" wesnoth))
-
 (define-public wesnoth-server
   (package
     (inherit wesnoth)
@@ -2844,9 +2829,6 @@ next campaign.")
     (description "This package contains a dedicated server for @emph{The
 Battle for Wesnoth}.")))
 
-(define-public the-battle-for-wesnoth-server
-  (deprecated-package "the-battle-for-wesnoth-server" wesnoth-server))
-
 (define-public gamine
   (package
     (name "gamine")
@@ -3780,9 +3762,6 @@ in strikes against the evil corporation.")
                    license:cc0
                    license:public-domain))))
 
-(define-public project-starfighter
-  (deprecated-package "project-starfighter" starfighter))
-
 (define-public chromium-bsu
   (package
     (name "chromium-bsu")
@@ -4719,9 +4698,6 @@ small robot living in the nano world, repair its maker.")
     ;; for a statement from the author.
     (license license:public-domain)))
 
-(define-public kiki-the-nano-bot
-  (deprecated-package "kiki-the-nano-bot" kiki))
-
 (define-public teeworlds
   (package
     (name "teeworlds")
@@ -4991,9 +4967,6 @@ underwater realm quarrel among themselves or comment on the efforts of your
 fish.  The whole game is accompanied by quiet, comforting music.")
     (license license:gpl2+)))
 
-(define-public fish-fillets-ng
-  (deprecated-package "fish-fillets-ng" fillets-ng))
-
 (define-public crawl
   (package
     (name "crawl")
@@ -5073,9 +5046,6 @@ monsters in a quest to find the mystifyingly fabulous Orb of Zot.")
                    license:zlib
                    license:asl2.0))))
 
-(define-public dungeon-crawl-stone-soup
-  (deprecated-package "dungeon-crawl-stone-soup" crawl))
-
 ;; The linter here claims that patch file names should start with the package
 ;; name. But, in this case, the patches are inherited from crawl with the
 ;; "crawl-" prefix instead of "crawl-tiles-".
@@ -5112,9 +5082,6 @@ monsters in a quest to find the mystifyingly fabulous Orb of Zot.")
        ("which" ,which)))
     (synopsis "Graphical roguelike dungeon crawler game")))
 
-(define-public dungeon-crawl-stone-soup-tiles
-  (deprecated-package "dungeon-crawl-stone-soup-tiles" crawl-tiles))
-
 (define-public lugaru
   (package
     (name "lugaru")
@@ -5518,9 +5485,6 @@ intuitive mouse control, streamlined mechanics and deep, challenging combat,
 Tales of Maj’Eyal offers engaging roguelike gameplay for the 21st century.")
     (license license:gpl3+)))
 
-(define-public tales-of-maj-eyal
-  (deprecated-package "tales-of-maj-eyal" tome4))
-
 (define-public quakespasm
   (package
     (name "quakespasm")
@@ -6986,9 +6950,6 @@ and cooperative.")
     ;; developers.
     (license (list license:gpl2+ license:lgpl2.1+))))
 
-(define-public battle-tanks
-  (deprecated-package "battle-tanks" btanks))
-
 (define-public slingshot
   (package
     (name "slingshot")
@@ -7189,9 +7150,6 @@ a fortress beyond the forbidden swamp.")
     (home-page "https://www.parallelrealities.co.uk/games/edgar/")
     (license license:gpl2+)))
 
-(define-public the-legend-of-edgar
-  (deprecated-package "the-legend-of-edgar" edgar))
-
 (define-public openclonk
   (package
     (name "openclonk")
diff --git a/gnu/packages/gnome-xyz.scm b/gnu/packages/gnome-xyz.scm
index 24a1dc256c4..ad4593bcd5c 100644
--- a/gnu/packages/gnome-xyz.scm
+++ b/gnu/packages/gnome-xyz.scm
@@ -5,6 +5,7 @@
 ;;; Copyright © 2020 Alex Griffin <a@ajgrf.com>
 ;;; Copyright © 2020 Jack Hill <jackhill@jackhill.us>
 ;;; Copyright © 2020 Ekaitz Zarraga <ekaitz@elenq.tech>
+;;; Copyright © 2020 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -467,9 +468,9 @@ scrollable tiling of windows and per monitor workspaces.  It's inspired by paper
 notebooks and tiling window managers.")
     (license license:gpl3)))
 
-(define-public numix-theme
+(define-public numix-gtk-theme
   (package
-    (name "numix-theme")
+    (name "numix-gtk-theme")
     (version "2.6.7")
     (source (origin
               (method git-fetch)
@@ -482,11 +483,14 @@ notebooks and tiling window managers.")
                 "12mw0kr0kkvg395qlbsvkvaqccr90cmxw5rrsl236zh43kj8grb7"))))
     (build-system gnu-build-system)
     (arguments
-     '(#:make-flags (list (string-append "DESTDIR=" (assoc-ref %outputs "out")))
+     '(#:make-flags
+       (list (string-append "INSTALL_DIR="
+                            (assoc-ref %outputs "out")
+                            "/share/themes/Numix"))
+       #:tests? #f
        #:phases
        (modify-phases %standard-phases
-         (delete 'configure)
-         (delete 'check))))
+         (delete 'configure))))             ; no configure script
     (native-inputs
      `(("glib:bin" ,glib "bin")             ; for glib-compile-schemas
        ("gnome-shell" ,gnome-shell)
@@ -499,6 +503,9 @@ dark elements.  It supports GNOME, Unity, Xfce, and Openbox.")
     (home-page "https://numixproject.github.io")
     (license license:gpl3+)))
 
+(define-public numix-theme
+  (deprecated-package "numix-theme" numix-gtk-theme))
+
 (define-public papirus-icon-theme
   (let ((version "0.0.0") ;; The package does not use semver
         (revision "0")
diff --git a/gnu/packages/gnome.scm b/gnu/packages/gnome.scm
index 77964f5c9ce..fc3d853a7a1 100644
--- a/gnu/packages/gnome.scm
+++ b/gnu/packages/gnome.scm
@@ -48,6 +48,7 @@
 ;;; Copyright © 2020 Oleg Pykhalov <go.wigust@gmail.com>
 ;;; Copyright © 2020 Pierre Neidhardt <mail@ambrevar.xyz>
 ;;; Copyright © 2020 raingloom <raingloom@riseup.net>
+;;; Copyright © 2020 Nicolas Goaziou <mail@nicolasgoaziou.fr>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -8117,10 +8118,6 @@ alternative user interface themes, changes in window management behavior,
 GNOME Shell appearance and extension, etc.")
     (license license:gpl3+)))
 
-;; This package has been renamed by upstream.
-(define-public gnome-tweak-tool
-  (deprecated-package "gnome-tweak-tool" gnome-tweaks))
-
 (define-public gnome-shell-extensions
   (package
     (name "gnome-shell-extensions")
@@ -8842,15 +8839,14 @@ views can be printed as PDF or PostScript files, or exported to HTML.")
 (define-public lollypop
   (package
     (name "lollypop")
-    (version "1.2.7")
+    (version "1.2.32")
     (source
      (origin
        (method url-fetch)
-       (uri (string-append "https://gitlab.gnome.org/World/lollypop/uploads/"
-                           "08f973788c7ca46d9285eec2ac818edb/"
+       (uri (string-append "https://adishatz.org/lollypop/"
                            "lollypop-" version ".tar.xz"))
        (sha256
-        (base32 "0hvq6m4i62i0m63bg4gzpfb9rv1fk6vq5jl2g3ppcgm4srmfm77j"))))
+        (base32 "1ng9492k8754vlqggbfsyzbmfdx4w17fzc4ad21fr92710na0w5a"))))
     (build-system meson-build-system)
     (arguments
      `(#:imported-modules ((guix build python-build-system)
@@ -9851,3 +9847,60 @@ to.")
               license:public-domain
               ;; snowball
               license:bsd-2))))
+
+(define-public parlatype
+  ;; This is one commit away from 2.0, because the latter introduced
+  ;; a regression in ASR.
+  (let ((commit "7d22ead13ef7578f99d24146663cc1bdb7d8c2a9")
+        (revision "0"))
+    (package
+      (name "parlatype")
+      (version (git-version "2.0" revision commit))
+      (source
+       (origin
+         (method git-fetch)
+         (uri (git-reference
+               (url "https://github.com/gkarsay/parlatype.git")
+               (commit commit)))
+         (file-name (git-file-name name version))
+         (sha256
+          (base32 "0r3k3qczbzi7bs5s1rddhpsnadyr805df40bqkx0srlxgh5mfghf"))))
+      (build-system meson-build-system)
+      (arguments
+       `(#:glib-or-gtk? #t
+         #:tests? #f                    ;require internet access
+         #:phases
+         (modify-phases %standard-phases
+           (add-after 'install 'wrap-parlatype
+             ;; Add gstreamer plugin provided in this package to system's
+             ;; plugins.
+             (lambda* (#:key outputs #:allow-other-keys)
+               (let* ((out (assoc-ref outputs "out"))
+                      (gst-plugin-path (string-append
+                                        out "/lib/gstreamer-1.0/"
+                                        ":"
+                                        (getenv "GST_PLUGIN_SYSTEM_PATH"))))
+                 (wrap-program (string-append out "/bin/parlatype")
+                   `("GST_PLUGIN_SYSTEM_PATH" ":" = (,gst-plugin-path))))
+               #t)))))
+      (native-inputs
+       `(("appstream-glib" ,appstream-glib)
+         ("desktop-file-utils" ,desktop-file-utils) ;for desktop-file-validate
+         ("gettext" ,gettext-minimal)
+         ("glib" ,glib "bin")           ;for glib-compile-resources
+         ("pkg-config" ,pkg-config)
+         ("yelp-tools" ,yelp-tools)))
+      (inputs
+       `(("gst-plugins-base" ,gst-plugins-base)
+         ("gst-plugins-good" ,gst-plugins-good)
+         ("gstreamer" ,gstreamer)
+         ("gtk+" ,gtk+)
+         ("pocketsphinx" ,pocketsphinx)
+         ("pulseaudio" ,pulseaudio)
+         ("sphinxbase" ,sphinxbase)))
+      (home-page "http://gkarsay.github.io/parlatype/")
+      (synopsis "GNOME audio player for transcription")
+      (description "Parlatype is an audio player for the GNOME desktop
+environment.  Its main purpose is the manual transcription of spoken
+audio files.")
+      (license license:gpl3+))))
diff --git a/gnu/packages/gnupg.scm b/gnu/packages/gnupg.scm
index ab36561f2d5..498a6a1a9aa 100644
--- a/gnu/packages/gnupg.scm
+++ b/gnu/packages/gnupg.scm
@@ -1,5 +1,5 @@
 ;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019 Ludovic Courtès <ludo@gnu.org>
 ;;; Copyright © 2013, 2015, 2018 Andreas Enge <andreas@enge.fr>
 ;;; Copyright © 2014, 2018 Eric Bavier <bavier@member.fsf.org>
 ;;; Copyright © 2014, 2015, 2016 Mark H Weaver <mhw@netris.org>
@@ -11,7 +11,7 @@
 ;;; Copyright © 2016 Christopher Baines <mail@cbaines.net>
 ;;; Copyright © 2016 Mike Gerwitz <mtg@gnu.org>
 ;;; Copyright © 2016 Troy Sankey <sankeytms@gmail.com>
-;;; Copyright © 2017 Leo Famulari <leo@famulari.name>
+;;; Copyright © 2017, 2020 Leo Famulari <leo@famulari.name>
 ;;; Copyright © 2017 Petter <petter@mykolab.ch>
 ;;; Copyright © 2018, 2019, 2020 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;; Copyright © 2018, 2019 Marius Bakke <mbakke@fastmail.com>
@@ -256,10 +256,10 @@ compatible to GNU Pth.")
               (method url-fetch)
               (uri (string-append "mirror://gnupg/gnupg/gnupg-" version
                                   ".tar.bz2"))
+              (patches (search-patches "gnupg-default-pinentry.patch"))
               (sha256
                (base32
-                "0c6a4v9p6qzhsw1pfcwc459bxpc8hma0w9z8iqb9khvligack9q4"))
-              (patches (search-patches "gnupg-default-pinentry.patch"))))
+                "0c6a4v9p6qzhsw1pfcwc459bxpc8hma0w9z8iqb9khvligack9q4"))))
     (build-system gnu-build-system)
     (native-inputs
      `(("pkg-config" ,pkg-config)))
diff --git a/gnu/packages/gnuzilla.scm b/gnu/packages/gnuzilla.scm
index c69a4e7e031..23f15906c50 100644
--- a/gnu/packages/gnuzilla.scm
+++ b/gnu/packages/gnuzilla.scm
@@ -1142,11 +1142,6 @@ standards of the IceCat project.")
        (cpe-name . "firefox_esr")
        (cpe-version . ,(first (string-split version #\-)))))))
 
-(define-public conkeror
-  ;; The Conkeror web browser relied on XULRunner, which IceCat > 50 no longer
-  ;; provides.  See <http://conkeror.org> for the original web page.
-  (deprecated-package "conkeror" icecat))
-
 (define-public firefox-decrypt
   (package
     (name "firefox-decrypt")
diff --git a/gnu/packages/graph.scm b/gnu/packages/graph.scm
index 9b391451fe7..a999b1cdfa6 100644
--- a/gnu/packages/graph.scm
+++ b/gnu/packages/graph.scm
@@ -1,7 +1,7 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2017, 2018, 2019, 2020 Ricardo Wurmus <rekado@elephly.net>
 ;;; Copyright © 2018 Joshua Sierles, Nextjournal <joshua@nextjournal.com>
-;;; Copyright © 2018 Tobias Geerinckx-Rice <me@tobias.gr>
+;;; Copyright © 2018, 2020 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;; Copyright © 2019 Efraim Flashner <efraim@flashner.co.il>
 ;;; Copyright © 2019 Andreas Enge <andreas@enge.fr>
 ;;; Copyright © 2020 Alexander Krotov <krotov@iitp.ru>
@@ -56,15 +56,14 @@
 (define-public igraph
   (package
     (name "igraph")
-    (version "0.8.0")
+    (version "0.8.1")
     (source
      (origin
        (method url-fetch)
        (uri (string-append "https://github.com/igraph/igraph/releases/"
                            "download/" version "/igraph-" version ".tar.gz"))
        (sha256
-        (base32
-         "0jcnfvahrlj08y46vnax5y5bb294v4b9n00qsy7pbx0cc0sp6qvj"))))
+        (base32 "0wbvrac3ip3lqmbkckhnxa2swlbc86l1h8mazdlb618kx3winvi6"))))
     (build-system gnu-build-system)
     (arguments
      `(#:configure-flags
diff --git a/gnu/packages/guile-xyz.scm b/gnu/packages/guile-xyz.scm
index b181189b3a2..f0f976c3d2a 100644
--- a/gnu/packages/guile-xyz.scm
+++ b/gnu/packages/guile-xyz.scm
@@ -24,6 +24,7 @@
 ;;; Copyright © 2019, 2020 Amar Singh <nly@disroot.org>
 ;;; Copyright © 2019 Timothy Sample <samplet@ngyro.com>
 ;;; Copyright © 2019 Martin Becze <mjbecze@riseup.net>
+;;; Copyright © 2020 Evan Straw <evan.straw99@gmail.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -2238,10 +2239,6 @@ format is also supported.")
 (define-public guile3.0-mcron
   (deprecated-package "guile3.0-mcron" mcron))
 
-(define-public mcron2
-  ;; This was mthl's mcron development branch, and it became mcron 1.1.
-  (deprecated-package "mcron2" mcron))
-
 (define-public guile-picture-language
   (let ((commit "91d10c96708d732145006dd2802acc4de08b632e")
         (revision "1"))
@@ -3298,3 +3295,48 @@ according to Bitorrent BEP003.")
 Relay Chat} (IRC).")
       ;; Some file headers incorrectly say LGPLv2+.
       (license license:lgpl2.1+))))
+
+(define-public guile3.0-websocket
+  (let ((commit "c854e0f84a40d972cbd532bbb89c97ca0126a7cf"))
+    (package
+      (name "guile3.0-websocket")
+      (version "0.1")
+      (source
+       (origin
+         (method git-fetch)
+         (uri (git-reference
+               (url "git://dthompson.us/guile-websocket.git")
+               (commit commit)))
+         (file-name (git-file-name name version))
+         (sha256
+          (base32
+           "1hymvsfrmq9qxr5cxnsgdz7y757yp1cpsgxmdp3f5wxxxpqgsmzx"))))
+      (build-system gnu-build-system)
+      (arguments
+       '(#:make-flags
+         '("GUILE_AUTO_COMPILE=0")
+         #:phases
+         (modify-phases %standard-phases
+           ;; The package was developed for Guile 2.0 and has this version
+           ;; hardcoded in the configure.ac and Makefile.am files. Substitute
+           ;; 3.0 instead so it can support Guile 3.0.
+           (add-after 'unpack 'update-guile-version
+             (lambda _
+               (substitute* "configure.ac"
+                 (("2.0.9") "3.0.0"))
+               (substitute* "Makefile.am"
+                 (("2.0") "3.0")
+
+                 ;; Install .go files where they belong.
+                 (("/ccache") "/site-ccache"))
+               #t)))))
+      (native-inputs
+       `(("autoconf" ,autoconf)
+         ("automake" ,automake)))
+      (inputs
+       `(("guile" ,guile-next)))
+      (synopsis "Websocket server/client for Guile")
+      (description "Guile-websocket provides an implementation of the
+WebSocket protocol as defined by RFC 6455.")
+      (home-page "https://git.dthompson.us/guile-websocket.git")
+      (license license:lgpl3+))))
diff --git a/gnu/packages/haskell-apps.scm b/gnu/packages/haskell-apps.scm
index 12cb857cbba..6ab962100ef 100644
--- a/gnu/packages/haskell-apps.scm
+++ b/gnu/packages/haskell-apps.scm
@@ -14,6 +14,7 @@
 ;;; Copyright © 2019 Efraim Flashner <efraim@flashner.co.il>
 ;;; Copyright © 2019 Alex Griffin <a@ajgrf.com>
 ;;; Copyright © 2020 Alexandru-Sergiu Marton <brown121407@member.fsf.org>
+;;; Copyright © 2020 Brian Leung <bkleung89@gmail.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -50,6 +51,42 @@
   #:use-module (gnu packages rsync)
   #:use-module (gnu packages version-control))
 
+(define-public apply-refact
+  (package
+    (name "apply-refact")
+    (version "0.6.0.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/apply-refact/apply-refact-"
+             version ".tar.gz"))
+       (sha256
+        (base32
+         "0p2mqgjcqr1zcmk8zgr0yq7g8z1agsa6l493lkj6g3ya9lyhxgig"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-refact" ,ghc-refact)
+       ("ghc-exactprint" ,ghc-exactprint)
+       ("ghc-syb" ,ghc-syb)
+       ("ghc-temporary" ,ghc-temporary)
+       ("ghc-filemanip" ,ghc-filemanip)
+       ("ghc-unix-compat" ,ghc-unix-compat)
+       ("ghc-optparse-applicative"
+        ,ghc-optparse-applicative)))
+    (native-inputs
+     `(("ghc-tasty" ,ghc-tasty)
+       ("ghc-tasty-golden" ,ghc-tasty-golden)
+       ("ghc-tasty-expected-failure"
+        ,ghc-tasty-expected-failure)
+       ("ghc-silently" ,ghc-silently)))
+    (home-page "https://hackage.haskell.org/package/apply-refact")
+    (synopsis "Perform refactorings specified by the refact library")
+    (description
+     "This package lets you perform refactorings specified by the refact
+library.  It is primarily used with HLint's @code{--refactor} flag.")
+    (license license:bsd-3)))
+
 ;; In Stackage LTS 14, this package is at 2.4.1.0.  However, that
 ;; version requires version 2.4.1.0 of the 'Cabal' package, which is
 ;; provided by GHC 8.6.5 at version 2.4.0.1.  Hence, we use an older
@@ -777,3 +814,6 @@ Replace some ASCII sequences by their Unicode equivalent (turned off by
 default)
 @end itemize")
     (license license:bsd-3)))
+
+(define-public ghc-stylish-haskell
+  (deprecated-package "ghc-stylish-haskell" stylish-haskell))
diff --git a/gnu/packages/haskell-web.scm b/gnu/packages/haskell-web.scm
index acdc1447a4b..05be862a85a 100644
--- a/gnu/packages/haskell-web.scm
+++ b/gnu/packages/haskell-web.scm
@@ -752,6 +752,41 @@ Haskell.")
 documents.")
     (license license:bsd-3)))
 
+(define-public ghc-html-conduit
+  (package
+    (name "ghc-html-conduit")
+    (version "1.3.2.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/html-conduit/"
+             "html-conduit-" version ".tar.gz"))
+       (sha256
+        (base32
+         "196c8zcnjp1pc5qvqxd8arx3xkw0a90rvg9mmiw2l4zwnx65709n"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-resourcet" ,ghc-resourcet)
+       ("ghc-conduit" ,ghc-conduit)
+       ("ghc-xml-conduit" ,ghc-xml-conduit)
+       ("ghc-xml-types" ,ghc-xml-types)
+       ("ghc-attoparsec" ,ghc-attoparsec)
+       ("ghc-conduit-extra" ,ghc-conduit-extra)))
+    (native-inputs
+     `(("ghc-hspec" ,ghc-hspec)
+       ("ghc-hunit" ,ghc-hunit)))
+    (home-page "https://github.com/snoyberg/xml")
+    (synopsis "Parse HTML documents using xml-conduit datatypes")
+    (description
+     "This package provides a parser for HTML documents that uses
+tagstream-conduit.  It automatically balances mismatched tags, so that
+there shouldn't be any parse failures.  It does not handle a full HTML
+document rendering, such as adding missing html and head tags.  Note that,
+since version 1.3.1, it uses an inlined copy of tagstream-conduit with
+entity decoding bugfixes applied.")
+    (license license:expat)))
+
 (define-public ghc-blaze-html
   (package
     (name "ghc-blaze-html")
@@ -1094,7 +1129,7 @@ functions, widgets, etc.")
 (define-public ghc-yesod-persistent
   (package
     (name "ghc-yesod-persistent")
-    (version "1.6.0.2")
+    (version "1.6.0.4")
     (source
      (origin
        (method url-fetch)
@@ -1103,7 +1138,7 @@ functions, widgets, etc.")
                            "yesod-persistent-" version ".tar.gz"))
        (sha256
         (base32
-         "17adw0aaj29ia7ii3jka301442860b5wvfrms079q973gzahz5fd"))))
+         "1gsiw2zx6z7za7a164h0fxfggkrdqz6fn0qyb2zn9qr7r2jbg1c0"))))
     (build-system haskell-build-system)
     (arguments `(#:tests? #f)) ; FIXME: hspec-discover not available in PATH.
     (inputs `(("ghc-yesod-core" ,ghc-yesod-core)
@@ -1655,6 +1690,6 @@ non-Haskell dependencies.")
      "High level web scraping library for Haskell")
     (description
      "Scalpel is a web scraping library inspired by libraries like Parsec
-and Perl's @code{Web::Scraper} Scalpel builds on top of TagSoup to provide a
+and Perl's @code{Web::Scraper}.  Scalpel builds on top of TagSoup to provide a
 declarative and monadic interface.")
     (license license:asl2.0)))
diff --git a/gnu/packages/haskell-xyz.scm b/gnu/packages/haskell-xyz.scm
index 0828dc93c62..5dc9f705ccc 100644
--- a/gnu/packages/haskell-xyz.scm
+++ b/gnu/packages/haskell-xyz.scm
@@ -25,6 +25,7 @@
 ;;; Copyright © 2020 Brett Gilio <brettg@gnu.org>
 ;;; Copyright © 2020 JoJo <jo@jo.zone>
 ;;; Copyright © 2020 Nicolas Goaziou <mail@nicolasgoaziou.fr>
+;;; Copyright © 2020 Alexandru-Sergiu Marton <brown121407@member.fsf.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -906,6 +907,45 @@ stand for certain ASCII character sequences, i.e. → instead of @code{->},
 ∀ instead of @code{forall} and many others.")
     (license license:bsd-3)))
 
+(define-public ghc-basic-prelude
+  (package
+    (name "ghc-basic-prelude")
+    (version "0.7.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/basic-prelude/"
+             "basic-prelude-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0yckmnvm6i4vw0mykj4fzl4ldsf67v8d2h0vp1bakyj84n4myx8h"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-hashable" ,ghc-hashable)
+       ("ghc-unordered-containers"
+        ,ghc-unordered-containers)
+       ("ghc-vector" ,ghc-vector)))
+    (home-page "https://github.com/snoyberg/basic-prelude#readme")
+    (synopsis "Enhanced core prelude; a common foundation for alternate preludes")
+    (description
+     "The premise of basic-prelude is that there are a lot of very commonly
+desired features missing from the standard Prelude, such as commonly used
+operators (<$> and >=>, for instance) and imports for common datatypes
+(e.g., ByteString and Vector).  At the same time, there are lots of other
+components which are more debatable, such as providing polymorphic versions
+of common functions.
+
+So basic-prelude is intended to give a common foundation for a number of
+alternate preludes.  The package provides two modules: CorePrelude provides
+the common ground for other preludes to build on top of, while BasicPrelude
+exports CorePrelude together with commonly used list functions to provide a
+drop-in replacement for the standard Prelude.
+
+Users wishing to have an improved Prelude can use BasicPrelude.  Developers
+wishing to create a new prelude should use CorePrelude.")
+    (license license:expat)))
+
 (define-public ghc-bifunctors
   (package
     (name "ghc-bifunctors")
@@ -3612,7 +3652,7 @@ directly uses the type system, rather than out-of-band exceptions.")
 (define-public ghc-esqueleto
   (package
     (name "ghc-esqueleto")
-    (version "3.0.0")
+    (version "3.3.1.1")
     (source
      (origin
        (method url-fetch)
@@ -3620,7 +3660,7 @@ directly uses the type system, rather than out-of-band exceptions.")
                            "esqueleto/esqueleto-" version ".tar.gz"))
        (sha256
         (base32
-         "187c098h2xyf2nhifkdy2bqfl6iap7a93mzwd2kirl5yyicpc9zy"))))
+         "1qi28ma8j5kfygjxnixlazxsyrkdqv8ljz3icwqi5dlscsnj6v3v"))))
     (build-system haskell-build-system)
     (arguments
      `(#:haddock? #f  ; Haddock reports an internal error.
@@ -7897,6 +7937,36 @@ class, and a lazy number type for non-negative numbers (a generalization
 of Peano numbers).")
     (license license:gpl3+)))
 
+(define-public ghc-nonce
+  (package
+    (name "ghc-nonce")
+    (version "1.0.7")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/nonce/"
+             "nonce-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1q9ph0aq51mvdvydnriqd12sfin36pfb8f588zgac1ybn8r64ksb"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-base64-bytestring" ,ghc-base64-bytestring)
+       ("ghc-entropy" ,ghc-entropy)
+       ("ghc-unliftio" ,ghc-unliftio)
+       ("ghc-unliftio-core" ,ghc-unliftio-core)))
+    (home-page "https://github.com/prowdsponsor/nonce")
+    (synopsis "Generate cryptographic nonces in Haskell")
+    (description
+     "A nonce is an arbitrary number used only once in a cryptographic
+communication.  This package contain helper functions for generating nonces.
+There are many kinds of nonces used in different situations.  It's not
+guaranteed that by using the nonces from this package you won't have any
+security issues.  Please make sure that the nonces generated via this
+package are usable on your design.")
+    (license license:bsd-3)))
+
 (define-public ghc-numeric-extras
   (package
     (name "ghc-numeric-extras")
@@ -8684,41 +8754,36 @@ syntax and semantics as Perl 5.")
 (define-public ghc-persistent
   (package
     (name "ghc-persistent")
-    (version "2.9.2")
+    (version "2.10.4")
     (source
      (origin
        (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "persistent-" version "/"
-                           "persistent-" version ".tar.gz"))
+       (uri (string-append
+             "https://hackage.haskell.org/package/persistent/"
+             "persistent-" version ".tar.gz"))
        (sha256
         (base32
-         "1wsa3kn427v88a6r0vwr6mz23snik2krbsgc8zqp18xajqn5szj9"))))
+         "1cxswz72sqdg2z1nbpgp1k5qr41djgk8qbf8nz7wfppsrhacyffi"))))
     (build-system haskell-build-system)
-    (inputs `(("ghc-old-locale" ,ghc-old-locale)
-              ("ghc-conduit" ,ghc-conduit)
-              ("ghc-resourcet" ,ghc-resourcet)
-              ("ghc-exceptions" ,ghc-exceptions)
-              ("ghc-monad-control" ,ghc-monad-control)
-              ("ghc-lifted-base" ,ghc-lifted-base)
-              ("ghc-resource-pool" ,ghc-resource-pool)
-              ("ghc-path-pieces" ,ghc-path-pieces)
-              ("ghc-http-api-data" ,ghc-http-api-data)
-              ("ghc-aeson" ,ghc-aeson)
-              ("ghc-monad-logger" ,ghc-monad-logger)
-              ("ghc-transformers-base" ,ghc-transformers-base)
-              ("ghc-base64-bytestring" ,ghc-base64-bytestring)
-              ("ghc-unordered-containers" ,ghc-unordered-containers)
-              ("ghc-vector" ,ghc-vector)
-              ("ghc-attoparsec" ,ghc-attoparsec)
-              ("ghc-haskell-src-meta" ,ghc-haskell-src-meta)
-              ("ghc-blaze-html" ,ghc-blaze-html)
-              ("ghc-blaze-markup" ,ghc-blaze-markup)
-              ("ghc-silently" ,ghc-silently)
-              ("ghc-fast-logger" ,ghc-fast-logger)
-              ("ghc-scientific" ,ghc-scientific)
-              ("ghc-tagged" ,ghc-tagged)
-              ("ghc-void" ,ghc-void)))
+    (inputs
+     `(("ghc-aeson" ,ghc-aeson)
+       ("ghc-attoparsec" ,ghc-attoparsec)
+       ("ghc-base64-bytestring" ,ghc-base64-bytestring)
+       ("ghc-blaze-html" ,ghc-blaze-html)
+       ("ghc-conduit" ,ghc-conduit)
+       ("ghc-fast-logger" ,ghc-fast-logger)
+       ("ghc-http-api-data" ,ghc-http-api-data)
+       ("ghc-monad-logger" ,ghc-monad-logger)
+       ("ghc-path-pieces" ,ghc-path-pieces)
+       ("ghc-resource-pool" ,ghc-resource-pool)
+       ("ghc-resourcet" ,ghc-resourcet)
+       ("ghc-scientific" ,ghc-scientific)
+       ("ghc-silently" ,ghc-silently)
+       ("ghc-unliftio-core" ,ghc-unliftio-core)
+       ("ghc-unliftio" ,ghc-unliftio)
+       ("ghc-unordered-containers"
+        ,ghc-unordered-containers)
+       ("ghc-vector" ,ghc-vector)))
     (native-inputs `(("ghc-hspec" ,ghc-hspec)))
     (home-page "https://www.yesodweb.com/book/persistent")
     (synopsis "Type-safe, multi-backend data serialization for Haskell")
@@ -8730,30 +8795,40 @@ way.")
 (define-public ghc-persistent-sqlite
   (package
     (name "ghc-persistent-sqlite")
-    (version "2.9.3")
+    (version "2.10.5.2")
     (source
      (origin
        (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "persistent-sqlite-" version "/"
-                           "persistent-sqlite-" version ".tar.gz"))
+       (uri (string-append
+             "https://hackage.haskell.org/package/persistent-sqlite/"
+             "persistent-sqlite-" version ".tar.gz"))
        (sha256
         (base32
-         "13wbn88ixv4d4dfjl1gabm1q60fbcnygbmixz57pi3z84drrynwq"))))
+         "0agag3cgivl6mk38pqzr0qw5lxps9p2bgdwvi5658l46hs7bixxn"))))
     (build-system haskell-build-system)
-    (inputs `(("ghc-persistent" ,ghc-persistent)
-              ("ghc-unliftio-core" ,ghc-unliftio-core)
-              ("ghc-aeson" ,ghc-aeson)
-              ("ghc-conduit" ,ghc-conduit)
-              ("ghc-monad-logger" ,ghc-monad-logger)
-              ("ghc-microlens-th" ,ghc-microlens-th)
-              ("ghc-resourcet" ,ghc-resourcet)
-              ("ghc-old-locale" ,ghc-old-locale)
-              ("ghc-resource-pool" ,ghc-resource-pool)
-              ("ghc-unordered-containers" ,ghc-unordered-containers)))
-    (native-inputs `(("ghc-hspec" ,ghc-hspec)
-                     ("ghc-persistent-template" ,ghc-persistent-template)
-                     ("ghc-temporary" ,ghc-temporary)))
+    (inputs
+     `(("ghc-persistent" ,ghc-persistent)
+       ("ghc-aeson" ,ghc-aeson)
+       ("ghc-conduit" ,ghc-conduit)
+       ("ghc-microlens-th" ,ghc-microlens-th)
+       ("ghc-monad-logger" ,ghc-monad-logger)
+       ("ghc-resource-pool" ,ghc-resource-pool)
+       ("ghc-resourcet" ,ghc-resourcet)
+       ("ghc-unliftio-core" ,ghc-unliftio-core)
+       ("ghc-unordered-containers"
+        ,ghc-unordered-containers)))
+    (native-inputs
+     `(("ghc-persistent-template"
+        ,ghc-persistent-template)
+       ("ghc-persistent-test" ,ghc-persistent-test)
+       ("ghc-exceptions" ,ghc-exceptions)
+       ("ghc-fast-logger" ,ghc-fast-logger)
+       ("ghc-hspec" ,ghc-hspec)
+       ("ghc-hunit" ,ghc-hunit)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-system-fileio" ,ghc-system-fileio)
+       ("ghc-system-filepath" ,ghc-system-filepath)
+       ("ghc-temporary" ,ghc-temporary)))
     (home-page
      "https://www.yesodweb.com/book/persistent")
     (synopsis "Backend for the persistent library using sqlite3")
@@ -8765,34 +8840,79 @@ system dependencies.")
 (define-public ghc-persistent-template
   (package
     (name "ghc-persistent-template")
-    (version "2.6.0")
+    (version "2.8.0")
     (source
      (origin
        (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "persistent-template-" version "/"
-                           "persistent-template-" version ".tar.gz"))
+       (uri (string-append
+             "https://hackage.haskell.org/package/persistent-template/"
+             "persistent-template-" version ".tar.gz"))
        (sha256
         (base32
-         "0wr1z2nfrl6jv1lprxb0d2jw4izqfcbcwvkdrhryzg95gjz8ryjv"))))
+         "16yjrl0gh4jbs4skr7iv6a55lny59bqhd6hjmvch1cl9j5d0c0g3"))))
     (build-system haskell-build-system)
-    (inputs `(("ghc-persistent" ,ghc-persistent)
-              ("ghc-monad-control" ,ghc-monad-control)
-              ("ghc-aeson" ,ghc-aeson)
-              ("ghc-aeson-compat" ,ghc-aeson-compat)
-              ("ghc-monad-logger" ,ghc-monad-logger)
-              ("ghc-unordered-containers" ,ghc-unordered-containers)
-              ("ghc-tagged" ,ghc-tagged)
-              ("ghc-path-pieces" ,ghc-path-pieces)
-              ("ghc-http-api-data" ,ghc-http-api-data)))
-    (native-inputs `(("ghc-hspec" ,ghc-hspec)
-                     ("ghc-quickcheck" ,ghc-quickcheck)))
+    (inputs
+     `(("ghc-persistent" ,ghc-persistent)
+       ("ghc-aeson" ,ghc-aeson)
+       ("ghc-http-api-data" ,ghc-http-api-data)
+       ("ghc-monad-control" ,ghc-monad-control)
+       ("ghc-monad-logger" ,ghc-monad-logger)
+       ("ghc-path-pieces" ,ghc-path-pieces)
+       ("ghc-th-lift-instances" ,ghc-th-lift-instances)
+       ("ghc-unordered-containers"
+        ,ghc-unordered-containers)))
+    (native-inputs
+     `(("ghc-hspec" ,ghc-hspec)
+       ("ghc-quickcheck" ,ghc-quickcheck)))
     (home-page "https://www.yesodweb.com/book/persistent")
     (synopsis "Type-safe, non-relational, multi-backend persistence")
     (description "This Haskell package provides interfaces and helper
 functions for the ghc-persistent package.")
     (license license:expat)))
 
+(define-public ghc-persistent-test
+  (package
+    (name "ghc-persistent-test")
+    (version "2.0.3.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/persistent-test/"
+             "persistent-test-" version ".tar.gz"))
+       (sha256
+        (base32
+         "11aq5cy0n43jamf6mg4sr4300bc2zdbjxsczzxwjkb4hzs0ijsdv"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-aeson" ,ghc-aeson)
+       ("ghc-blaze-html" ,ghc-blaze-html)
+       ("ghc-conduit" ,ghc-conduit)
+       ("ghc-monad-control" ,ghc-monad-control)
+       ("ghc-monad-logger" ,ghc-monad-logger)
+       ("ghc-path-pieces" ,ghc-path-pieces)
+       ("ghc-persistent" ,ghc-persistent)
+       ("ghc-persistent-template" ,ghc-persistent-template)
+       ("ghc-random" ,ghc-random)
+       ("ghc-resourcet" ,ghc-resourcet)
+       ("ghc-transformers-base" ,ghc-transformers-base)
+       ("ghc-unliftio" ,ghc-unliftio)
+       ("ghc-unliftio-core" ,ghc-unliftio-core)
+       ("ghc-unordered-containers" ,ghc-unordered-containers)))
+    (native-inputs
+     `(("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-quickcheck-instances" ,ghc-quickcheck-instances)
+       ("ghc-hspec" ,ghc-hspec)
+       ("ghc-hspec-expectations" ,ghc-hspec-expectations)
+       ("ghc-hunit" ,ghc-hunit)))
+    (home-page "https://www.yesodweb.com/book/persistent")
+    (synopsis "Tests for the Persistent database library")
+    (description
+     "This is only for use in developing libraries that should conform to
+the persistent interface, not for users of the persistent suite of database
+libraries.")
+    (license license:expat)))
+
 (define-public ghc-pipes
   (package
     (name "ghc-pipes")
@@ -9086,6 +9206,46 @@ API.")
     (description "This library provides profunctors for Haskell.")
     (license license:bsd-3)))
 
+(define-public ghc-project-template
+  (package
+    (name "ghc-project-template")
+    (version "0.2.0.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/project-template/project-template-"
+             version ".tar.gz"))
+       (sha256
+        (base32
+         "1p69ww4rhah2qxragl615wl4a6mk4x9w09am8knmz3s4lxpljlpb"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-base64-bytestring" ,ghc-base64-bytestring)
+       ("ghc-conduit" ,ghc-conduit)
+       ("ghc-conduit-extra" ,ghc-conduit-extra)
+       ("ghc-resourcet" ,ghc-resourcet)))
+    (native-inputs
+     `(("ghc-hspec" ,ghc-hspec)
+       ("hspec-discover" ,hspec-discover)
+       ("ghc-quickcheck" ,ghc-quickcheck)))
+    (arguments
+     `(#:cabal-revision
+       ("1"
+        "0lq3sqnq0nr0gbvgzp0lqdl3j3mqdmdlf8xsw0j3pjh581xj3k0a")))
+    (home-page "https://github.com/fpco/haskell-ide")
+    (synopsis "Specify Haskell project templates and generate files")
+    (description
+     "Haskell library for both generating and consuming project templates.
+
+ost IDEs provide the concept of a project template: instead of writing all
+of the code for a project from scratch, you select a template, answer a few
+questions, and a bunch of files are automatically generated.
+
+project-template tries to provide a canonical Haskell library for implementing
+the ideal templating system.")
+    (license license:bsd-3)))
+
 (define-public ghc-psqueues
   (package
     (name "ghc-psqueues")
@@ -9151,6 +9311,36 @@ Typical applications of Priority Search Queues include:
 @end itemize")
     (license license:bsd-3)))
 
+(define-public ghc-pwstore-fast
+  (package
+    (name "ghc-pwstore-fast")
+    (version "2.4.4")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/pwstore-fast/"
+             "pwstore-fast-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1cpvlwzg3qznhygrr78f75p65mnljd9v5cvnagfxjqppnrkay6bj"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-base64-bytestring" ,ghc-base64-bytestring)
+       ("ghc-cryptohash" ,ghc-cryptohash)
+       ("ghc-random" ,ghc-random)
+       ("ghc-byteable" ,ghc-byteable)))
+    (home-page "https://github.com/PeterScott/pwstore")
+    (synopsis "Secure password storage")
+    (description
+     "To store passwords securely, they should be salted, then hashed with
+a slow hash function.  This library uses PBKDF1-SHA256, and handles all the
+details.  It uses the cryptohash package for speed; if you need a pure
+Haskell library, pwstore-purehaskell has the exact same API, but uses only
+pure Haskell.  It is about 25 times slower than this package, but still quite
+usable.")
+    (license license:bsd-3)))
+
 (define-public ghc-random
   (package
     (name "ghc-random")
@@ -11118,9 +11308,6 @@ functions for breaking or splitting on substrings and replacing all
 occurrences of a substring (the first in case of overlaps) with another.")
     (license license:bsd-3)))
 
-(define-public ghc-stylish-haskell
-  (deprecated-package "ghc-stylish-haskell" stylish-haskell))
-
 (define-public ghc-svg-builder
   (package
     (name "ghc-svg-builder")
diff --git a/gnu/packages/image.scm b/gnu/packages/image.scm
index f0c66dd2158..9974208229c 100644
--- a/gnu/packages/image.scm
+++ b/gnu/packages/image.scm
@@ -241,10 +241,6 @@ APNG patch provides APNG support to libpng.")
 images.  It can further losslessly compress them by as much as 40%.")
    (license license:zlib)))
 
-(define-public pngcrunch
-  ;; This package used to be wrongfully name "pngcrunch".
-  (deprecated-package "pngcrunch" pngcrush))
-
 (define-public pnglite
   (let ((commit "11695c56f7d7db806920bd9229b69f230e6ffb38")
         (revision "1"))
@@ -1327,7 +1323,7 @@ ISO/IEC 15444-1).")
               (commit (string-append "release-" version))))
         (file-name (git-file-name name version))
         (sha256
-         (base32 "12bs2rfmmy021087i10vxibdbbvd5vld0vk3h5hymhpz7rgszcmg"))))
+         (base32 "1dqyrq3p8bkgvj4ci50ac342hjnhyz6xxvhiwp7wpi3v3nbj7s02"))))
     (build-system gnu-build-system)
     (native-inputs
      `(("autoconf" ,autoconf)
diff --git a/gnu/packages/java.scm b/gnu/packages/java.scm
index c68b0d3fd2a..1d910e17d17 100644
--- a/gnu/packages/java.scm
+++ b/gnu/packages/java.scm
@@ -9,7 +9,7 @@
 ;;; Copyright © 2017, 2019 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;; Copyright © 2018, 2019 Gábor Boskovits <boskovits@gmail.com>
 ;;; Copyright © 2018 Chris Marusich <cmmarusich@gmail.com>
-;;; Copyright © 2018, 2019 Efraim Flashner <efraim@flashner.co.il>
+;;; Copyright © 2018, 2019, 2020 Efraim Flashner <efraim@flashner.co.il>
 ;;; Copyright © 2019, 2020 Björn Höfling <bjoern.hoefling@bjoernhoefling.de>
 ;;; Copyright © 2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 ;;;
@@ -3442,12 +3442,14 @@ an Ant task that extends the built-in @code{jar} task.")
     (name "java-hamcrest-core")
     (version "1.3")
     (source (origin
-              (method url-fetch)
-              (uri (string-append "https://github.com/hamcrest/JavaHamcrest/"
-                                  "archive/hamcrest-java-" version ".tar.gz"))
+              (method git-fetch)
+              (uri (git-reference
+                     (url "https://github.com/hamcrest/JavaHamcrest/")
+                     (commit (string-append "hamcrest-java-" version))))
+              (file-name (git-file-name name version))
               (sha256
                (base32
-                "11g0s105fmwzijbv08lx8jlb521yravjmxnpgdx08fvg1kjivhva"))
+                "16fxxkrd31ahqvcaby30jgh3z1i0zxh51m24hxgz0z2agxj6bc63"))
               (modules '((guix build utils)))
               (snippet
                '(begin
@@ -3547,13 +3549,14 @@ testing frameworks, mocking libraries and UI validation rules.")
     (name "java-junit")
     (version "4.12")
     (source (origin
-              (method url-fetch)
-              (uri (string-append "https://github.com/junit-team/junit/"
-                                  "archive/r" version ".tar.gz"))
-              (file-name (string-append name "-" version ".tar.gz"))
+              (method git-fetch)
+              (uri (git-reference
+                     (url "https://github.com/junit-team/junit/")
+                     (commit (string-append "r" version))))
+              (file-name (git-file-name name version))
               (sha256
                (base32
-                "090dn5v1vs0b3acyaqc0gjf6p8lmd2h24wfzsbq7sly6b214anws"))
+                "1j8avi91px1z8rjc89cfikwrvfifdmmsarwiyrcnr59ynvpz0v8h"))
               (modules '((guix build utils)))
               (snippet
                '(begin
@@ -3566,7 +3569,7 @@ testing frameworks, mocking libraries and UI validation rules.")
        #:jar-name "junit.jar"))
     (inputs
      `(("java-hamcrest-core" ,java-hamcrest-core)))
-    (home-page "https://junit.org/")
+    (home-page "https://junit.org/junit4/")
     (synopsis "Test framework for Java")
     (description
      "JUnit is a simple framework to write repeatable tests for Java projects.
@@ -3579,13 +3582,14 @@ sharing common test data, and test runners for running tests.")
     (name "java-plexus-utils")
     (version "3.2.0")
     (source (origin
-              (method url-fetch)
-              (uri (string-append "https://github.com/codehaus-plexus/"
-                                  "plexus-utils/archive/plexus-utils-"
-                                  version ".tar.gz"))
+              (method git-fetch)
+              (uri (git-reference
+                     (url "https://github.com/codehaus-plexus/plexus-utils")
+                     (commit (string-append "plexus-utils-" version))))
+              (file-name (git-file-name name version))
               (sha256
                (base32
-                "1ihfigar20lvk4pinii7dq05i173xphhw4iyrk6gjfy04m01j2lz"))))
+                "1mlx7xrq7lgqjqcpg7y4hi1ghavf28vvk3har82037dqx61n0f15"))))
     (build-system ant-build-system)
     ;; FIXME: The default build.xml does not include a target to install
     ;; javadoc files.
@@ -3632,13 +3636,14 @@ more.")
     (name "java-plexus-interpolation")
     (version "1.23")
     (source (origin
-              (method url-fetch)
-              (uri (string-append "https://github.com/codehaus-plexus/"
-                                  "plexus-interpolation/archive/"
-                                  "plexus-interpolation-" version ".tar.gz"))
+              (method git-fetch)
+              (uri (git-reference
+                     (url "https://github.com/codehaus-plexus/plexus-interpolation")
+                     (commit (string-append "plexus-interpolation-" version))))
+              (file-name (git-file-name name version))
               (sha256
                (base32
-                "03377yzlx5q440m6sxxgv6a5qb8fl30zzcgxgc0hxk5qgl2z1jjn"))))
+                "005hxxg1adv71a96lz4vp65bk3v1pi76j4c45z29xzizclib16vl"))))
     (build-system ant-build-system)
     (arguments
      `(#:jar-name "plexus-interpolation.jar"
@@ -3662,13 +3667,14 @@ these two libraries to vary independently of one another.")
     (name "java-plexus-classworlds")
     (version "2.5.2")
     (source (origin
-              (method url-fetch)
-              (uri (string-append "https://github.com/codehaus-plexus/"
-                                  "plexus-classworlds/archive/plexus-classworlds-"
-                                  version ".tar.gz"))
+              (method git-fetch)
+              (uri (git-reference
+                     (url "https://github.com/codehaus-plexus/plexus-classworlds")
+                     (commit (string-append "plexus-classworlds-" version))))
+              (file-name (git-file-name name version))
               (sha256
                (base32
-                "1qm4p0rl8d82lzhsiwnviw11jnq44s0gflg78zq152xyyr2xmh8g"))))
+                "1iv8x55fbni2hg4l7pdpbwfq75xmvq1f25g6nxma8rcdpihsh13r"))))
     (build-system ant-build-system)
     (arguments
      `(#:jar-name "plexus-classworlds.jar"
@@ -3688,12 +3694,14 @@ components.")
     (name "java-plexus-container-default-bootstrap")
     (version "1.7.1")
     (source (origin
-              (method url-fetch)
-              (uri (string-append "https://github.com/codehaus-plexus/plexus-containers"
-                                  "/archive/plexus-containers-" version ".tar.gz"))
+              (method git-fetch)
+              (uri (git-reference
+                     (url "https://github.com/codehaus-plexus/plexus-containers")
+                     (commit (string-append "plexus-containers-" version))))
+              (file-name (git-file-name name version))
               (sha256
                (base32
-                "0xw5g30qf4a83608rw9v2hv8pfsz7d69dkdhk6r0wia4q78hh1pc"))))
+                "1316hrp5vqfv0aw7miq2fp0wwy833h66h502h29vnh5sxj27x228"))))
     (build-system ant-build-system)
     (arguments
      `(#:jar-name "container-default.jar"
@@ -3727,12 +3735,14 @@ implementation.")
     (name "java-plexus-io")
     (version "3.0.0")
     (source (origin
-              (method url-fetch)
-              (uri (string-append "https://github.com/codehaus-plexus/plexus-io"
-                                  "/archive/plexus-io-" version ".tar.gz"))
+              (method git-fetch)
+              (uri (git-reference
+                     (url "https://github.com/codehaus-plexus/plexus-io")
+                     (commit (string-append "plexus-io-" version))))
+              (file-name (git-file-name name version))
               (sha256
                (base32
-                "0f2j41kihaymxkpbm55smpxjja235vad8cgz94frfy3ppcp021dw"))))
+                "1h4q9l2j9sfbscvxpnyy2hazi0r83h3am86y4r959wrl1b24xxwd"))))
     (build-system ant-build-system)
     (arguments
      `(#:jar-name "plexus-io.jar"
@@ -3886,12 +3896,14 @@ from source tags and class annotations.")))
     (name "java-plexus-cipher")
     (version "1.7")
     (source (origin
-              (method url-fetch)
-              (uri (string-append "https://github.com/codehaus-plexus/plexus-cipher"
-                                  "/archive/plexus-cipher-" version ".tar.gz"))
+              (method git-fetch)
+              (uri (git-reference
+                     (url "https://github.com/codehaus-plexus/plexus-cipher")
+                     (commit (string-append "plexus-cipher-" version))))
+              (file-name (git-file-name name version))
               (sha256
                (base32
-                "1j3r8xzlxlk340snkjp6lk2ilkxlkn8qavsfiq01f43xmvv8ymk3"))))
+                "0m638nzlxbmnbcj5cwdpgs326ab584yv0k803zlx37r6iqwvf6b0"))))
     (build-system ant-build-system)
     (arguments
      `(#:jar-name "plexus-cipher.jar"
@@ -3922,12 +3934,14 @@ and decryption.")
     (name "java-plexus-compiler-api")
     (version "2.8.4")
     (source (origin
-              (method url-fetch)
-              (uri (string-append "https://github.com/codehaus-plexus/plexus-compiler"
-                                  "/archive/plexus-compiler-" version ".tar.gz"))
+              (method git-fetch)
+              (uri (git-reference
+                     (url "https://github.com/codehaus-plexus/plexus-compiler")
+                     (commit (string-append "plexus-compiler-" version))))
+              (file-name (git-file-name name version))
               (sha256
                (base32
-                "09vmxs0807wsd26nbrwwj5l8ycmzazqycj52l7w6wjvkryywi69h"))))
+                "1nq1gnn3s6z1j29gmi1hqbklsmm8b1lmnafb0191914f95mn18gk"))))
     (build-system ant-build-system)
     (arguments
      `(#:jar-name "plexus-compiler-api.jar"
@@ -3973,13 +3987,14 @@ Compiler component.")))
     (source (origin
               ;; This project doesn't tag releases or publish tarballs, so we take
               ;; the "prepare release plexus-sec-dispatcher-1.4" git commit.
-              (method url-fetch)
-              (uri (string-append "https://github.com/sonatype/plexus-sec-dispatcher/"
-                                  "archive/7db8f88048.tar.gz"))
+              (method git-fetch)
+              (uri (git-reference
+                     (url "https://github.com/sonatype/plexus-sec-dispatcher/")
+                     (commit "7db8f880486e192a1c5ea9544e01e756c3d49d0f")))
               (sha256
                (base32
-                "1smfrk4n7xbrsxpxcp2j4i0j8q86j73w0w6xg7qz83dp6dagdjgp"))
-              (file-name (string-append name "-" version ".tar.gz"))))
+                "1ng4yliy4cqpjr4fxxjbpwyk1wkch5f8vblm1kvwf328s4gibszs"))
+              (file-name (git-file-name name version))))
     (arguments
      `(#:jar-name "plexus-sec-dispatcher.jar"
        #:source-dir "src/main/java"
@@ -4094,12 +4109,14 @@ Plexus components.")
     (name "java-sisu-build-api")
     (version "0.0.7")
     (source (origin
-              (method url-fetch)
-              (uri (string-append "https://github.com/sonatype/sisu-build-api/"
-                                  "archive/plexus-build-api-" version ".tar.gz"))
+              (method git-fetch)
+              (uri (git-reference
+                     (url "https://github.com/sonatype/sisu-build-api")
+                     (commit (string-append "plexus-build-api-" version))))
+              (file-name (git-file-name name version))
               (sha256
                (base32
-                "1c3rrpma3x634xp2rm2p5iskfhzdyc7qfbhjzr70agrl1jwghgy2"))))
+                "1d5w6c58gkx30d51v7qwv1xrhc0ly76848gihmgshj19yf6yhca0"))))
     (build-system ant-build-system)
     (arguments
      `(#:jar-name "sisu-build-api.jar"
@@ -4149,12 +4166,14 @@ project and determining what files need to be rebuilt.")
     (name "java-modello-core")
     (version "1.9.1")
     (source (origin
-              (method url-fetch)
-              (uri (string-append "https://github.com/codehaus-plexus/modello"
-                                  "/archive/modello-" version ".tar.gz"))
+              (method git-fetch)
+              (uri (git-reference
+                     (url "https://github.com/codehaus-plexus/modello")
+                     (commit (string-append "modello-" version))))
+              (file-name (git-file-name name version))
               (sha256
                (base32
-                "0l2pvns8pmlrmjm3iknp7gpg3654y1m8qhy55b19sdwdchdcyxfh"))))
+                "1di6ni42aqllpdvkpyfcw70352vr2i8wf6hd5nhd9kmqjb5dj5j4"))))
     (build-system ant-build-system)
     (arguments
      `(#:jar-name "modello-core.jar"
@@ -4321,7 +4340,7 @@ on the XPP3 API (XML Pull Parser).")))
     (version "6.0")
     (source (origin
               (method url-fetch)
-              (uri (string-append "http://download.forge.ow2.org/asm/"
+              (uri (string-append "https://download.forge.ow2.org/asm/"
                                   "asm-" version ".tar.gz"))
               (sha256
                (base32
@@ -4423,13 +4442,14 @@ to generate and transform Java byte code.")
     (name "java-objenesis")
     (version "2.5.1")
     (source (origin
-              (method url-fetch)
-              (uri (string-append "https://github.com/easymock/objenesis/"
-                                  "archive/" version ".tar.gz"))
-              (file-name (string-append "objenesis-" version ".tar.gz"))
+              (method git-fetch)
+              (uri (git-reference
+                     (url "https://github.com/easymock/objenesis")
+                     (commit version)))
+              (file-name (git-file-name name version))
               (sha256
                (base32
-                "1va5qz1i2wawwavhnxfzxnfgrcaflz9p1pg03irrjh4nd3rz8wh6"))))
+                "054yi200wj00x6dp1sxfrwgndwywadsbn8d8ij1j0v45j9g2vdya"))))
     (build-system ant-build-system)
     (arguments
      `(#:jar-name "objenesis.jar"
@@ -4452,12 +4472,14 @@ constructor on object instantiation.")
     (name "java-easymock")
     (version "3.4")
     (source (origin
-              (method url-fetch)
-              (uri (string-append "https://github.com/easymock/easymock/"
-                                  "archive/easymock-" version ".tar.gz"))
+              (method git-fetch)
+              (uri (git-reference
+                     (url "https://github.com/easymock/easymock/")
+                     (commit (string-append "easymock-" version))))
+              (file-name (git-file-name name version))
               (sha256
                (base32
-                "1yzg0kv256ndr57gpav46cyv4a1ns5sj722l50zpxk3j6sk9hnmi"))))
+                "02vybm8hc0i0n9sp2f2iiqn54zwqhq835f76wc6b2m7819z5a8dq"))))
     (build-system ant-build-system)
     (arguments
      `(#:jar-name "easymock.jar"
@@ -4502,7 +4524,7 @@ constructor on object instantiation.")
     (native-inputs
      `(("java-junit" ,java-junit)
        ("java-hamcrest-core" ,java-hamcrest-core)))
-    (home-page "http://easymock.org")
+    (home-page "https://easymock.org/")
     (synopsis "Java library providing mock objects for unit tests")
     (description "EasyMock is a Java library that provides an easy way to use
 mock objects in unit testing.")
@@ -4513,13 +4535,14 @@ mock objects in unit testing.")
     (name "java-jmock")
     (version "1.2.0")
     (source (origin
-              (method url-fetch)
-              (uri (string-append "https://github.com/jmock-developers/"
-                                  "jmock-library/archive/" version ".tar.gz"))
-              (file-name (string-append "jmock-" version ".tar.gz"))
+              (method git-fetch)
+              (uri (git-reference
+                     (url "https://github.com/jmock-developers/jmock-library")
+                     (commit version)))
+              (file-name (git-file-name name version))
               (sha256
                (base32
-                "0xmrlhq0fszldkbv281k9463mv496143vvmqwpxp62yzjvdkx9w0"))))
+                "0lkga995xd9b9mmzxmcd301hlw83p1h78nibh7djlx7wydscr85z"))))
     (build-system ant-build-system)
     (arguments
      `(#:build-target "jars"
@@ -4527,7 +4550,7 @@ mock objects in unit testing.")
        #:phases
        (modify-phases %standard-phases
          (replace 'install (install-jars "build")))))
-    (home-page "http://www.jmock.org")
+    (home-page "http://jmock.org/")
     (synopsis "Mock object library for test-driven development")
     (description "JMock is a library that supports test-driven development of
 Java code with mock objects.  Mock objects help you design and test the
@@ -4550,13 +4573,14 @@ The jMock library
     (name "java-jmock")
     (version "2.8.2")
     (source (origin
-              (method url-fetch)
-              (uri (string-append "https://github.com/jmock-developers/"
-                                  "jmock-library/archive/" version ".tar.gz"))
-              (file-name (string-append name "-" version ".tar.gz"))
+              (method git-fetch)
+              (uri (git-reference
+                     (url "https://github.com/jmock-developers/jmock-library")
+                     (commit version)))
+              (file-name (git-file-name name version))
               (sha256
                (base32
-                "18650a9g8xffcsdb6w91pbswa7f40fp2sh6s3nclkclz5dbzq8f0"))))
+                "12b7l22g3nrjvf2dzcw3z03fpd2chrgp0d8xkvn8w55rwb57pax6"))))
     (inputs
      `(("java-hamcrest-all" ,java-hamcrest-all)
        ("java-asm" ,java-asm)
@@ -6725,12 +6749,14 @@ This is a part of the Apache Commons Project.")
     (name "java-javaewah")
     (version "1.1.6")
     (source (origin
-              (method url-fetch)
-              (uri (string-append "https://github.com/lemire/javaewah/"
-                                  "archive/JavaEWAH-" version ".tar.gz"))
+              (method git-fetch)
+              (uri (git-reference
+                     (url "https://github.com/lemire/javaewah/")
+                     (commit (string-append "JavaEWAH-" version))))
+              (file-name (git-file-name name version))
               (sha256
                (base32
-                "1n7j1r1h24wlhwv9zdcj6yqjrhma2ixwyzm15l5vrv6yqjs6753b"))))
+                "1m8qcb1py76v7avbjjrkvyy6fhr5dk2ywy73gbsxqry04gkm2nhw"))))
     (build-system ant-build-system)
     (arguments `(#:jar-name "javaewah.jar"))
     (inputs
@@ -6743,7 +6769,7 @@ This is a part of the Apache Commons Project.")
 compression scheme.  It can be used to implement bitmap indexes.
 
 The goal of word-aligned compression is not to achieve the best compression,
-but rather to improve query processing time. Hence, JavaEWAH tries to save CPU
+but rather to improve query processing time.  Hence, JavaEWAH tries to save CPU
 cycles, maybe at the expense of storage.  However, the EWAH scheme is always
 more efficient storage-wise than an uncompressed bitmap (as implemented in the
 @code{BitSet} class by Sun).")
@@ -7032,13 +7058,14 @@ StringTemplate also powers ANTLR.")
     (name "antlr3")
     (version "3.5.2")
     (source (origin
-              (method url-fetch)
-              (uri (string-append "https://github.com/antlr/antlr3/archive/"
-                                  version ".tar.gz"))
-              (file-name (string-append name "-" version ".tar.gz"))
+              (method git-fetch)
+              (uri (git-reference
+                     (url "https://github.com/antlr/antlr3")
+                     (commit version)))
+              (file-name (git-file-name name version))
               (sha256
                (base32
-                "0218v683081lg54z9hvjxinhxd4dqp870jx6n39gslm0bkyi4vd6"))))
+                "0cafavrjmzqhklghrk8c2jqxkdwxgzskm20pbrfd3r41cn00dpnf"))))
     (build-system ant-build-system)
     (arguments
      `(#:jar-name (string-append ,name "-" ,version ".jar")
diff --git a/gnu/packages/kde-pim.scm b/gnu/packages/kde-pim.scm
index bf962859b9b..1b99ae1de4d 100644
--- a/gnu/packages/kde-pim.scm
+++ b/gnu/packages/kde-pim.scm
@@ -1571,7 +1571,7 @@ functionality to help you organize your life.")
 Kontact.  It provides management of events and tasks, alarm notification, web
 export, network transparent handling of data, group scheduling, import and
 export of calendar files and more.  It is able to work together with a wide
-variety of clanedaring services, including NextCloud, Kolab, Google Calendar
+variety of calendaring services, including NextCloud, Kolab, Google Calendar
 and others.  KOrganizer is fully customizable to your needs and is an integral
 part of the Kontact suite, which aims to be a complete solution for organizing
 your personal data.  KOrganizer supports the two dominant standards for storing
diff --git a/gnu/packages/lean.scm b/gnu/packages/lean.scm
index e71b4c93ae9..235113d4751 100644
--- a/gnu/packages/lean.scm
+++ b/gnu/packages/lean.scm
@@ -1,5 +1,5 @@
 ;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2019 Amin Bandali <mab@gnu.org>
+;;; Copyright © 2019 Amin Bandali <bandali@gnu.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
diff --git a/gnu/packages/libreoffice.scm b/gnu/packages/libreoffice.scm
index d5dd3c092b7..225bf78706d 100644
--- a/gnu/packages/libreoffice.scm
+++ b/gnu/packages/libreoffice.scm
@@ -998,7 +998,7 @@ converting QuarkXPress file format.  It supports versions 3.1 to 4.1.")
 (define-public libreoffice
   (package
     (name "libreoffice")
-    (version "6.4.1.2")
+    (version "6.4.2.2")
     (source
      (origin
        (method url-fetch)
@@ -1008,7 +1008,7 @@ converting QuarkXPress file format.  It supports versions 3.1 to 4.1.")
          (version-prefix version 3) "/libreoffice-" version ".tar.xz"))
        (sha256
         (base32
-         "02iz94flpxgkvlipk3psddzw2gdq2j4nv7z01kphs5107sfs0r0d"))))
+         "06acm41q9nda8r30b13cn9zafsw1gszjdphh6lx90s09d2sf7f23"))))
     (build-system glib-or-gtk-build-system)
     (native-inputs
      `(("bison" ,bison)
diff --git a/gnu/packages/linux.scm b/gnu/packages/linux.scm
index 253f41eb5d9..b56803066b2 100644
--- a/gnu/packages/linux.scm
+++ b/gnu/packages/linux.scm
@@ -5,7 +5,7 @@
 ;;; Copyright © 2014, 2015, 2016, 2017, 2018, 2019, 2020 Mark H Weaver <mhw@netris.org>
 ;;; Copyright © 2015 Federico Beffa <beffa@fbengineering.ch>
 ;;; Copyright © 2015 Taylan Ulrich Bayırlı/Kammer <taylanbayirli@gmail.com>
-;;; Copyright © 2015, 2016, 2017, 2018 Efraim Flashner <efraim@flashner.co.il>
+;;; Copyright © 2015, 2016, 2017, 2018, 2020 Efraim Flashner <efraim@flashner.co.il>
 ;;; Copyright © 2016 Christopher Allan Webber <cwebber@dustycloud.org>
 ;;; Copyright © 2016, 2017, 2018, 2019, 2020 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;; Copyright © 2016, 2017 Alex Kost <alezost@gmail.com>
@@ -2434,14 +2434,14 @@ user-space processes.")
     (name "unionfs-fuse")
     (version "2.0")
     (source (origin
-              (method url-fetch)
-              (uri (string-append
-                    "https://github.com/rpodgorny/unionfs-fuse/archive/v"
-                    version ".tar.gz"))
-              (file-name (string-append name "-" version ".tar.gz"))
+              (method git-fetch)
+              (uri (git-reference
+                     (url "https://github.com/rpodgorny/unionfs-fuse")
+                     (commit (string-append "v" version))))
+              (file-name (git-file-name name version))
               (sha256
                (base32
-                "0hsn8l1iblvx27bpd4dvnvnbh9ri3sv2f9xzpsnfz3379kb7skgj"))))
+                "0lb8zgdxnjy2fjr2284hvdfn7inc1in44ynzgcr66x54bxzvynj6"))))
     (build-system cmake-build-system)
     (native-inputs
      `(("python" ,python)))
@@ -2953,9 +2953,6 @@ device nodes from /dev/, handles hotplug events and loads drivers at boot
 time.")
     (license license:gpl2+)))
 
-(define-public eudev-with-hwdb
-  (deprecated-package "eudev-with-hwdb" eudev))
-
 (define-public lvm2
   (package
     (name "lvm2")
@@ -5391,7 +5388,7 @@ monitoring tools for Linux.  These include @code{mpstat}, @code{iostat},
 (define-public light
   (package
     (name "light")
-    (version "1.2.1")
+    (version "1.2.2")
     (source
      (origin
        (method git-fetch)
@@ -5399,7 +5396,7 @@ monitoring tools for Linux.  These include @code{mpstat}, @code{iostat},
              (url "https://github.com/haikarainen/light.git")
              (commit (string-append "v" version))))
        (sha256
-        (base32 "0zrjipd392bzjvxx0rjrb0cgi0ix1d83fwgw1mcy8kc4d16cgyjg"))
+        (base32 "1a70zcf88ifsnwll486aicjnh48zisdf8f7vi34ihw61kdadsq9s"))
        (file-name (git-file-name name version))))
     (build-system gnu-build-system)
     (arguments
diff --git a/gnu/packages/lisp-xyz.scm b/gnu/packages/lisp-xyz.scm
index 5631383edaf..4c59cfa8723 100644
--- a/gnu/packages/lisp-xyz.scm
+++ b/gnu/packages/lisp-xyz.scm
@@ -6643,8 +6643,8 @@ which implements a set of utilities.")
   (sbcl-package->ecl-package sbcl-metatilities-base))
 
 (define-public sbcl-cl-containers
-  (let ((commit "810927e19d933bcf38ffeb7a23ce521efc432d45")
-        (revision "1"))
+  (let ((commit "b2980bac9ac87ad32b63b722ce520fa26cb36ee6")
+        (revision "2"))
     (package
       (name "sbcl-cl-containers")
       (version (git-version "0.12.1" revision commit))
@@ -6657,7 +6657,7 @@ which implements a set of utilities.")
          (file-name (git-file-name name version))
          (sha256
           (base32
-           "1s9faxw7svhbjpkhfrz2qxgjm3cvyjb8wpyb4m8dx4i5g7vvprkv"))))
+           "19hmlax19hq0xjaqr8za90vwf06ymxw1m29sj053a309k3hm84gx"))))
       (build-system asdf-build-system/sbcl)
       (native-inputs
        `(("lift" ,sbcl-lift)))
@@ -11250,3 +11250,28 @@ If features:
 
 (define-public cl-sycamore
   (sbcl-package->cl-source-package sbcl-sycamore))
+
+(define-public sbcl-trivial-package-local-nicknames
+  (package
+    (name "sbcl-trivial-package-local-nicknames")
+    (version "0.2")
+    (home-page "https://github.com/phoe/trivial-package-local-nicknames")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url home-page)
+             (commit "16b7ad4c2b120f50da65154191f468ea5598460e")))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32 "18qc27xkjzdcqrilpk3pm7djldwq5rm3ggd5h9cr8hqcd54i2fqg"))))
+    (build-system asdf-build-system/sbcl)
+    (synopsis "Common Lisp compatibility library for package local nicknames")
+    (description
+     "This library is a portable compatibility layer around package local nicknames (PLN).
+This was done so there is a portability library for the PLN API not included
+in DEFPACKAGE.")
+    (license license:unlicense)))
+
+(define-public cl-trivial-package-local-nicknames
+  (sbcl-package->cl-source-package sbcl-trivial-package-local-nicknames))
diff --git a/gnu/packages/machine-learning.scm b/gnu/packages/machine-learning.scm
index 32aa6849d2b..4fb129246b5 100644
--- a/gnu/packages/machine-learning.scm
+++ b/gnu/packages/machine-learning.scm
@@ -962,21 +962,26 @@ the following advantages:
     (name "vowpal-wabbit")
     (version "8.5.0")
     (source (origin
-              (method url-fetch)
-              (uri (string-append
-                    "https://github.com/JohnLangford/vowpal_wabbit/archive/"
-                    version ".tar.gz"))
+              (method git-fetch)
+              (uri (git-reference
+                     (url "https://github.com/JohnLangford/vowpal_wabbit")
+                     (commit version)))
               (sha256
                (base32
-                "0clp2kb7rk5sckhllxjr5a651awf4s8dgzg4659yh4hf5cqnf0gr"))
-              (file-name (string-append name "-" version ".tar.gz"))))
+                "04bwzk6ifgnz3fmzid8b7avxf9n5pnx9xcjm61nkjng1vv0bpj8x"))
+              (file-name (git-file-name name version))))
     (inputs
      `(("boost" ,boost)
        ("zlib" ,zlib)))
     (arguments
      `(#:configure-flags
        (list (string-append "--with-boost="
-                            (assoc-ref %build-inputs "boost")))))
+                            (assoc-ref %build-inputs "boost")))
+       #:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'make-files-writable
+           (lambda _
+             (for-each make-file-writable (find-files "." ".*")) #t)))))
     (build-system gnu-build-system)
     (home-page "https://github.com/JohnLangford/vowpal_wabbit")
     (synopsis "Fast machine learning library for online learning")
diff --git a/gnu/packages/mail.scm b/gnu/packages/mail.scm
index 8fc9d19e6a6..139f737b6a3 100644
--- a/gnu/packages/mail.scm
+++ b/gnu/packages/mail.scm
@@ -8,7 +8,7 @@
 ;;; Copyright © 2015 Paul van der Walt <paul@denknerd.org>
 ;;; Copyright © 2015, 2016, 2018 Eric Bavier <bavier@member.fsf.org>
 ;;; Copyright © 2015 Andreas Enge <andreas@enge.fr>
-;;; Copyright © 2015, 2016, 2017, 2018, 2019 Efraim Flashner <efraim@flashner.co.il>
+;;; Copyright © 2015, 2016, 2017, 2018, 2019, 2020 Efraim Flashner <efraim@flashner.co.il>
 ;;; Copyright © 2016 Christopher Allan Webber <cwebber@dustycloud.org>
 ;;; Copyright © 2016 Al McElrath <hello@yrns.org>
 ;;; Copyright © 2016 Leo Famulari <leo@famulari.name>
@@ -144,14 +144,14 @@
 (define-public mailutils
   (package
     (name "mailutils")
-    (version "3.8")
+    (version "3.9")
     (source (origin
              (method url-fetch)
              (uri (string-append "mirror://gnu/mailutils/mailutils-"
                                  version ".tar.xz"))
              (sha256
               (base32
-               "1wkn9ch664477r4d8jk9153w5msljsbj99907k7zgzpmywbs6ba7"))))
+               "1g1xf2lal04nsnf1iym9n9n0wxjpqbcr9nysxpm98v4pniinqwsz"))))
     (build-system gnu-build-system)
     (arguments
      `(#:phases
@@ -166,7 +166,8 @@
              ;; Tests try to invoke 'mda' such that it looks up the
              ;; 'root' user, which does not exist in the build
              ;; environment.
-             (substitute* "mda/tests/testsuite"
+             (substitute* '("mda/mda/tests/testsuite"
+                            "mda/lmtpd/tests/testsuite")
                (("root <")         "nobody <")
                (("spool/root")     "spool/nobody")
                (("root@localhost") "nobody@localhost"))
@@ -1259,6 +1260,10 @@ which can add many functionalities to the base client.")
                (install-file (string-append msmtpq "/msmtp-queue") bin)
                (install-file (string-append msmtpq "/README.msmtpq") doc)
                (install-file "scripts/vim/msmtp.vim" vimfiles)
+               ;; Don't rely on netcat being in the PATH to test for a
+               ;; connection, instead try tp ing debian.org.
+               (substitute* (string-append bin "/msmtpq")
+                 (("EMAIL_CONN_TEST=n") "EMAIL_CONN_TEST=p"))
                #t))))))
     (synopsis
      "Simple and easy to use SMTP client with decent sendmail compatibility")
diff --git a/gnu/packages/man.scm b/gnu/packages/man.scm
index e0019d4c6e7..13604af08fc 100644
--- a/gnu/packages/man.scm
+++ b/gnu/packages/man.scm
@@ -3,7 +3,7 @@
 ;;; Copyright © 2014 David Thompson <dthompson2@worcester.edu>
 ;;; Copyright © 2015, 2016 Ricardo Wurmus <rekado@elephly.net>
 ;;; Copyright © 2015 Alex Kost <alezost@gmail.com>
-;;; Copyright © 2015, 2016 Efraim Flashner <efraim@flashner.co.il>
+;;; Copyright © 2015, 2016, 2020 Efraim Flashner <efraim@flashner.co.il>
 ;;; Copyright © 2017, 2018, 2019, 2020 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;; Copyright © 2018, 2019 Rutger Helling <rhelling@mykolab.com>
 ;;; Copyright © 2018, 2019 Marius Bakke <mbakke@fastmail.com>
@@ -25,6 +25,7 @@
 
 (define-module (gnu packages man)
   #:use-module (guix licenses)
+  #:use-module (guix git-download)
   #:use-module (guix download)
   #:use-module (guix packages)
   #:use-module (guix build-system gnu)
@@ -259,13 +260,14 @@ in C99.")
     (version "1.6.0")
     (source
      (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://github.com/mvertes/txt2man/archive/txt2man-"
-             version ".tar.gz"))
+       (method git-fetch)
+       (uri (git-reference
+              (url "https://github.com/mvertes/txt2man")
+              (commit (string-append "txt2man-" version))))
+       (file-name (git-file-name name version))
        (sha256
         (base32
-         "168cj96974n2z0igin6j1ic1m45zyic7nm5ark7frq8j78rrx4zn"))))
+         "1razjpvlcp85hqli77mwr9nmn5jnv3lm1fxbbqjpx1brv3h1lvm5"))))
     (build-system gnu-build-system)
     (arguments
      `(#:tests? #f ; no "check" target
diff --git a/gnu/packages/maths.scm b/gnu/packages/maths.scm
index 62ca34761fe..4ff2189fb9d 100644
--- a/gnu/packages/maths.scm
+++ b/gnu/packages/maths.scm
@@ -29,7 +29,7 @@
 ;;; Copyright © 2018 Marius Bakke <mbakke@fastmail.com>
 ;;; Copyright © 2018 Eric Brown <brown@fastmail.com>
 ;;; Copyright © 2018 Julien Lepiller <julien@lepiller.eu>
-;;; Copyright © 2018 Amin Bandali <mab@gnu.org>
+;;; Copyright © 2018 Amin Bandali <bandali@gnu.org>
 ;;; Copyright © 2019 Nicolas Goaziou <mail@nicolasgoaziou.fr>
 ;;; Copyright © 2019 Steve Sprang <scs@stevesprang.com>
 ;;; Copyright © 2019 Robert Smith <robertsmith@posteo.net>
@@ -1648,9 +1648,6 @@ script files.")
                   "qscintilla2_qt5"))
                #t))))))))
 
-(define-public qtoctave
-  (deprecated-package "qtoctave" octave))
-
 (define-public opencascade-oce
   (package
     (name "opencascade-oce")
@@ -3124,7 +3121,7 @@ directly in C++, or quick conversion of research code into production
 environments.  It can be used for machine learning, pattern recognition,
 signal processing, bioinformatics, statistics, econometrics, etc.  The library
 provides efficient classes for vectors, matrices and cubes, as well as 150+
-associated functions (eg. contiguous and non-contiguous submatrix views).")
+associated functions (e.g., contiguous and non-contiguous submatrix views).")
     (license license:asl2.0)))
 
 (define-public muparser
@@ -4212,6 +4209,10 @@ as equations, scalars, vectors, and matrices.")
                   (guix build utils))
        #:phases
        (modify-phases %standard-phases
+         (add-after 'unpack 'enable-bytecode-determinism
+           (lambda _
+             (setenv "PYTHONHASHSEED" "0")
+             #t))
          (add-after 'unpack 'fix-compatability
            ;; Versions after 4.8.3 have immintrin.h IFDEFed for Windows only.
            (lambda _
diff --git a/gnu/packages/mpd.scm b/gnu/packages/mpd.scm
index fe670f6aae8..c96d67d8f20 100644
--- a/gnu/packages/mpd.scm
+++ b/gnu/packages/mpd.scm
@@ -92,7 +92,7 @@ interfacing MPD in the C, C++ & Objective C languages.")
 (define-public mpd
   (package
     (name "mpd")
-    (version "0.21.20")
+    (version "0.21.21")
     (source (origin
               (method url-fetch)
               (uri
@@ -101,7 +101,7 @@ interfacing MPD in the C, C++ & Objective C languages.")
                               "/mpd-" version ".tar.xz"))
               (sha256
                (base32
-                "1q8hwl3i0a4qzdwfh44r0nh5zd2mm3rraqw5qvmz6qfrjslz0bj2"))))
+                "1kk8q5z99zdzwv3angn03jwnxhqdad0pnyi5j67c2qiv1rgv3gg1"))))
     (build-system meson-build-system)
     (arguments
      `(#:configure-flags '("-Ddocumentation=true"))) ;the default is 'false'...
diff --git a/gnu/packages/mtools.scm b/gnu/packages/mtools.scm
index b93d5789b98..5994cd140c2 100644
--- a/gnu/packages/mtools.scm
+++ b/gnu/packages/mtools.scm
@@ -1,7 +1,7 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2013 John Darrington <jmd@gnu.org>
 ;;; Copyright © 2015, 2019 Ludovic Courtès <ludo@gnu.org>
-;;; Copyright © 2018 Tobias Geerinckx-Rice <me@tobias.gr>
+;;; Copyright © 2018, 2020 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;; Copyright © 2018 Efraim Flashner <efraim@flashner.co.il>
 ;;;
 ;;; This file is part of GNU Guix.
@@ -29,14 +29,14 @@
 (define-public mtools
   (package
     (name "mtools")
-    (version "4.0.23")
+    (version "4.0.24")
     (source (origin
               (method url-fetch)
               (uri (string-append "mirror://gnu/mtools/mtools-"
                                   version ".tar.bz2"))
               (sha256
                (base32
-                "1qwfxzr964fasxlzhllahk8mzh7c82s808wvly95dsqsflkdp27i"))
+                "1f9g7g8zspp8nvg1nz869il9pvxpdpchqd0vxfc89y8rjbda5x14"))
               (patches
                (search-patches "mtools-mformat-uninitialized.patch"))))
     (build-system gnu-build-system)
diff --git a/gnu/packages/multiprecision.scm b/gnu/packages/multiprecision.scm
index deafd87404d..2848e63d603 100644
--- a/gnu/packages/multiprecision.scm
+++ b/gnu/packages/multiprecision.scm
@@ -3,7 +3,7 @@
 ;;; Copyright © 2014 Mark H Weaver <mhw@netris.org>
 ;;; Copyright © 2015, 2018 Andreas Enge <andreas@enge.fr>
 ;;; Copyright © 2016 Nicolas Goaziou <mail@nicolasgoaziou.fr>
-;;; Copyright © 2016 Jan Nieuwenhuizen <janneke@gnu.org>
+;;; Copyright © 2016, 2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 ;;; Copyright © 2018, 2019 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;; Copyright © 2018 Eric Bavier <bavier@member.fsf.org>
 ;;; Copyright © 2018, 2019 Efraim Flashner <efraim@flashner.co.il>
@@ -50,18 +50,38 @@
    (build-system gnu-build-system)
    (native-inputs `(("m4" ,m4)))
    (outputs '("out" "debug"))
-   (arguments `(#:parallel-tests? #f ; mpz/reuse fails otherwise
-                #:configure-flags
-                '(;; Build a "fat binary", with routines for several
-                  ;; sub-architectures.
-                  "--enable-fat"
-                  "--enable-cxx"
-                  ,@(cond ((target-mingw?)
-                           ;; Static and shared cannot be built in one go:
-                           ;; they produce different headers.  We need shared.
-                           `("--disable-static"
-                             "--enable-shared"))
-                          (else '())))))
+   (arguments
+    `(#:parallel-tests? #f ; mpz/reuse fails otherwise
+      #:configure-flags
+      '(;; Build a "fat binary", with routines for several
+        ;; sub-architectures.
+        "--enable-fat"
+        "--enable-cxx"
+        ,@(cond ((target-mingw?)
+                 ;; Static and shared cannot be built in one go:
+                 ;; they produce different headers.  We need shared.
+                 `("--disable-static"
+                   "--enable-shared"))
+                (else '())))
+      ;; Remove after core-updates merge.
+      ;; Workaround for gcc-7 transition breakage, -system and cross-build,
+      ;; Note: See <http://bugs.gnu.org/22186> for why not 'CPATH'.
+      ;; Note: See <http://bugs.gnu.org/30756> for why not 'C_INCLUDE_PATH' & co.
+      ,@(if (target-mingw?)
+            `(#:phases
+              (modify-phases %standard-phases
+                (add-before 'configure 'setenv
+                  (lambda _
+                    (let ((gcc (assoc-ref %build-inputs "cross-gcc"))
+                          (libc (assoc-ref %build-inputs "cross-libc")))
+                      (setenv "CROSS_CPLUS_INCLUDE_PATH"
+                              (string-append gcc "/include/c++"
+                                             ":" gcc "/include"
+                                             ":" libc "/include"))
+                      (format #t "environment variable `CROSS_CPLUS_INCLUDE_PATH' set to `~a'\n"
+                              (getenv "CROSS_CPLUS_INCLUDE_PATH"))
+                      #t)))))
+            '())))
    (synopsis "Multiple-precision arithmetic library")
    (description
     "The @acronym{GMP, the GNU Multiple Precision Arithmetic} library performs
diff --git a/gnu/packages/music.scm b/gnu/packages/music.scm
index 5aec8c5077a..773a5820917 100644
--- a/gnu/packages/music.scm
+++ b/gnu/packages/music.scm
@@ -1409,7 +1409,7 @@ users to select LV2 plugins and run them with jalv.")
 (define-public synthv1
   (package
     (name "synthv1")
-    (version "0.9.12")
+    (version "0.9.13")
     (source (origin
               (method url-fetch)
               (uri
@@ -1417,7 +1417,7 @@ users to select LV2 plugins and run them with jalv.")
                               "/synthv1-" version ".tar.gz"))
               (sha256
                (base32
-                "1amxrl1cqwgncw5437r572frgf6xhss3cfpbgh178i8phlq1q731"))))
+                "0bb48myvgvqcibwm68qhd4852pjr2g19rasf059a799d1hzgfq3l"))))
     (build-system gnu-build-system)
     (arguments
      `(#:tests? #f))                    ; there are no tests
@@ -1441,7 +1441,7 @@ oscillators and stereo effects.")
 (define-public drumkv1
   (package
     (name "drumkv1")
-    (version "0.9.12")
+    (version "0.9.13")
     (source (origin
               (method url-fetch)
               (uri
@@ -1449,7 +1449,7 @@ oscillators and stereo effects.")
                               "/drumkv1-" version ".tar.gz"))
               (sha256
                (base32
-                "0hmnmk9vvi43wl6say0dg7j088h7mmwmfdwjhsq89c7i7cpg78da"))))
+                "1h88sakxs0b20k8v2sh14y05fin1zqmhnid6h9mk9c37ixxg58ia"))))
     (build-system gnu-build-system)
     (arguments
      `(#:tests? #f))                    ; there are no tests
@@ -1474,7 +1474,7 @@ effects.")
 (define-public samplv1
   (package
     (name "samplv1")
-    (version "0.9.12")
+    (version "0.9.13")
     (source (origin
               (method url-fetch)
               (uri
@@ -1482,7 +1482,7 @@ effects.")
                               "/samplv1-" version ".tar.gz"))
               (sha256
                (base32
-                "0xzjxiqzcf1ygabrjsy0iachhnpy85rp9519fmj2f568r6ml6hzg"))))
+                "0clsp6s5qfnh0xaxbd35vq2ppi72q9dfayrzlgl73800a8p7gh9m"))))
     (build-system gnu-build-system)
     (arguments
      `(#:tests? #f))                    ; there are no tests
@@ -1507,7 +1507,7 @@ effects.")
 (define-public padthv1
   (package
     (name "padthv1")
-    (version "0.9.12")
+    (version "0.9.13")
     (source (origin
               (method url-fetch)
               (uri
@@ -1515,7 +1515,7 @@ effects.")
                               "/padthv1-" version ".tar.gz"))
               (sha256
                (base32
-                "1zz3rz990k819q0rlzllqdwvag0x9k63443lb0mp8lwlczxnza6l"))))
+                "1c1zllph86qswcxddz4vpsj6r9w21hbv4gkba0pyd3q7pbfqr7nz"))))
     (build-system gnu-build-system)
     (arguments
      `(#:tests? #f))                    ; there are no tests
@@ -5293,3 +5293,93 @@ as JACK standalone applications.")
 automation that comes as an LV2 plugin bundle with a custom UI.")
     (home-page "https://git.zrythm.org/cgit/ZLFO/")
     (license license:agpl3+)))
+
+(define-public vl1-emulator
+  (package
+    (name "vl1-emulator")
+    (version "1.1.0.0")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/linuxmao-org/VL1-emulator.git")
+             (commit (string-append "v" version))
+             ;; bundles a specific commit of the DISTRHO plugin framework
+             (recursive? #t)))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32
+         "1npc86vqma8gk1hawa0lii0r2xmnv846plyl1ci3bdswyrdk5chm"))))
+    (build-system gnu-build-system)
+    (arguments
+     `(#:tests? #f                      ;no check target
+       #:make-flags
+       (list (string-append "PREFIX=" (assoc-ref %outputs "out"))
+             "CC=gcc")
+       #:phases
+       (modify-phases %standard-phases
+         (delete 'configure))))         ;no configure target
+    (inputs
+     `(("cairo" ,cairo)
+       ("jack" ,jack-1)
+       ("mesa" ,mesa)))
+    (native-inputs
+     `(("pkg-config" ,pkg-config)))
+    (home-page "https://github.com/linuxmao-org/VL1-emulator")
+    (synopsis "Emulator of Casio VL-Tone VL1")
+    (description "The VL1-Emulator is an emulator of Casio VL-Tone VL1,
+based on source code by PolyValens, offered as an LV2 plugin and a
+standalone JACK application.")
+    ;; Expat or CC0
+    (license (list license:expat license:cc0))))
+
+(define-public regrader
+  (package
+    (inherit vl1-emulator)
+    (name "regrader")
+    (version "1.0.0")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/linuxmao-org/regrader.git")
+             (commit (string-append "v" version))
+             ;; bundles a specific commit of the DISTRHO plugin framework
+             (recursive? #t)))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32
+         "0gl4d5lf2afqknz22jz7hh7029sc9v1xrz6nbz9dlv42bwc0cvl0"))))
+    (home-page "https://github.com/linuxmao-org/regrader")
+    (synopsis "Delay effect plugin")
+    (description
+     "Regrader is a delay effect where the repeats degrade in resolution.
+This is an unofficial port of the Regrader plugin created by Igorski.  It
+is available as an LV2 plugin and a standalone JACK application.")
+    (license license:expat)))
+
+(define-public fogpad
+  (package
+    (inherit vl1-emulator)
+    (name "fogpad")
+    (version "1.0.0")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/linuxmao-org/fogpad")
+             (commit (string-append "v" version))
+             ;; bundles a specific commit of the DISTRHO plugin framework
+             (recursive? #t)))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32
+         "1j1hbya2dsqpf22zkpi4kwz3dram9g1ndxzmgfwpmf3i4jd3csgb"))))
+    (home-page "https://github.com/linuxmao-org/fogpad")
+    (synopsis "Reverb effect plugin")
+    (description
+     "Fogpad is a reverb effect in which the reflections can be frozen,
+filtered, pitch shifted and ultimately disintegrated.  This is an unofficial
+port of the Regrader plugin created by Igorski.  It is available as an LV2
+plugin and a standalone JACK application.")
+    (license license:expat)))
diff --git a/gnu/packages/networking.scm b/gnu/packages/networking.scm
index 84aab45e5f5..c492a7f2adf 100644
--- a/gnu/packages/networking.scm
+++ b/gnu/packages/networking.scm
@@ -32,7 +32,7 @@
 ;;; Copyright © 2019 Timotej Lazar <timotej.lazar@araneo.si>
 ;;; Copyright © 2019 Brice Waegeneire <brice@waegenei.re>
 ;;; Copyright © 2019 Tonton <tonton@riseup.net>
-;;; Copyright © 2019 Alex Griffin <a@ajgrf.com>
+;;; Copyright © 2019, 2020 Alex Griffin <a@ajgrf.com>
 ;;; Copyright © 2019 Jan Wielkiewicz <tona_kosmicznego_smiecia@interia.pl>
 ;;; Copyright © 2019 Daniel Schaefer <git@danielschaefer.me>
 ;;; Copyright © 2019 Diego N. Barbato <dnbarbato@posteo.de>
@@ -2784,7 +2784,7 @@ module @code{batman-adv}, for Layer 2.")
 (define-public pagekite
   (package
     (name "pagekite")
-    (version "1.5.0.191126")
+    (version "1.5.0.200327")
     (source
      (origin
        (method git-fetch)
@@ -2793,7 +2793,7 @@ module @code{batman-adv}, for Layer 2.")
              (commit (string-append "v" version))))
        (file-name (git-file-name name version))
        (sha256
-        (base32 "0mncfjfrr13sm84g5z49qxg5cy791h5qxphjsl77x91zs3m36c8l"))))
+        (base32 "1vw7kjwxqd3qvm7kpxgjzl6797y0i1f16yfkfad84qpx2ij0gvdm"))))
     (build-system python-build-system)
     (arguments
      `(#:phases
@@ -2902,6 +2902,24 @@ Such interfaces are useful for VPN software, virtualization, emulation,
 simulation, and a number of other applications.")
     (license license:gpl2)))
 
+(define-public wol
+  (package
+    (name "wol")
+    (version "0.7.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "mirror://sourceforge/wake-on-lan/wol/"
+                           version "/wol-" version ".tar.gz"))
+       (sha256
+        (base32 "08i6l5lr14mh4n3qbmx6kyx7vjqvzdnh3j9yfvgjppqik2dnq270"))))
+    (build-system gnu-build-system)
+    (home-page "https://sourceforge.net/projects/wake-on-lan/")
+    (synopsis "Implements Wake On LAN functionality in a small program")
+    (description "Tool to send a magic packet to wake another host on the
+network.  This must be enabled on the target host, usually in the BIOS.")
+    (license license:gpl2)))
+
 (define-public vde2
   (package
     (name "vde2")
diff --git a/gnu/packages/ocr.scm b/gnu/packages/ocr.scm
index 1266e7e419a..dc690f3cefb 100644
--- a/gnu/packages/ocr.scm
+++ b/gnu/packages/ocr.scm
@@ -1,6 +1,6 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2013 Ludovic Courtès <ludo@gnu.org>
-;;; Copyright © 2016 Efraim Flashner <efraim@flashner.co.il>
+;;; Copyright © 2016, 2020 Efraim Flashner <efraim@flashner.co.il>
 ;;; Copyright © 2019 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;; Copyright © 2019 Alex Vong <alexvong1995@gmail.com>
 ;;;
@@ -57,13 +57,13 @@ it produces text in 8-bit or UTF-8 formats.")
     (version "3.04.01")
     (source
      (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://github.com/tesseract-ocr/tesseract/archive/"
-             version ".tar.gz"))
-       (file-name (string-append name "-" version ".tar.gz"))
+       (method git-fetch)
+       (uri (git-reference
+              (url "https://github.com/tesseract-ocr/tesseract")
+              (commit version)))
+       (file-name (git-file-name name version))
        (sha256
-        (base32 "0snwd8as5i8vx7zkimpd2yg898jl96zf90r65a9w615f2hdkxxjp"))))
+        (base32 "0h1x4z1h86n2gwknd0wck6gykkp99bmm02lg4a47a698g4az6ybv"))))
     (build-system gnu-build-system)
     (inputs
      `(("leptonica" ,leptonica)))
@@ -71,7 +71,7 @@ it produces text in 8-bit or UTF-8 formats.")
      '(#:configure-flags
        (let ((leptonica (assoc-ref %build-inputs "leptonica")))
          (list (string-append "LIBLEPT_HEADERSDIR=" leptonica "/include")))))
-    (home-page "https://github.com/tesseract-ocr")
+    (home-page "https://github.com/tesseract-ocr/tesseract")
     (synopsis "Optical character recognition engine")
     (description
      "Tesseract is an optical character recognition (OCR) engine with very
diff --git a/gnu/packages/package-management.scm b/gnu/packages/package-management.scm
index 1c4503995be..a27c7691b08 100644
--- a/gnu/packages/package-management.scm
+++ b/gnu/packages/package-management.scm
@@ -413,8 +413,6 @@ the Nix package manager.")
                (invoke "make" "install-binPROGRAMS")))
            (delete 'wrap-program)))))))
 
-(define-public guile2.0-guix
-  (deprecated-package "guile2.0-guix" guix))
 
 (define-public guile2.2-guix
   (package
@@ -1024,7 +1022,7 @@ for packaging and deployment of cross-compiled Windows applications.")
 (define-public libostree
   (package
     (name "libostree")
-    (version "2020.2")
+    (version "2020.3")
     (source (origin
               (method url-fetch)
               (uri (string-append
@@ -1032,7 +1030,7 @@ for packaging and deployment of cross-compiled Windows applications.")
                     (version-major+minor version) "/libostree-" version ".tar.xz"))
               (sha256
                (base32
-                "0bbk0sg4m38g7j00hy358p2azxas87minpgz3avwma6jsylj1qjg"))))
+                "01cch4as23xspq6pck59al7x5jj60wl21g8p3iqbdxcjl1p3jxsq"))))
     (build-system gnu-build-system)
     (arguments
      '(#:phases
diff --git a/gnu/packages/patches/gnupg-default-pinentry.patch b/gnu/packages/patches/gnupg-default-pinentry.patch
index 272f4b53dc3..a8ed6135650 100644
--- a/gnu/packages/patches/gnupg-default-pinentry.patch
+++ b/gnu/packages/patches/gnupg-default-pinentry.patch
@@ -1,15 +1,65 @@
-Default to the pinentry program installed in ~/.guix-profile.
+Make GnuPG automatically find a pinentry installed by Guix. Try using
+$HOME or, if that variable is not set, use the system password database,
+or fall back to looking in "/".
+
+More information:
+
+https://bugs.gnu.org/24076
 
 diff --git a/common/homedir.c b/common/homedir.c
-index e9e75d0..74e0aaf 100644
+index 4b6e46e88..f7ae68ba5 100644
 --- a/common/homedir.c
 +++ b/common/homedir.c
-@@ -968,7 +968,7 @@ get_default_pinentry_name (int reset)
+@@ -33,6 +33,7 @@
+ #include <errno.h>
+ #include <fcntl.h>
+ #include <unistd.h>
++#include <pwd.h>
+ 
+ #ifdef HAVE_W32_SYSTEM
+ #include <winsock2.h>   /* Due to the stupid mingw64 requirement to
+@@ -67,6 +68,10 @@
+  * gnupg_homedir and gnupg_set_homedir.  Malloced.  */
+ static char *the_gnupg_homedir;
+ 
++/* The user's home directory. Used in Guix to help GnuPG find the
++ * pinentry. */
++static char *the_user_homedir;
++
+ /* Flag indicating that home directory is not the default one.  */
+ static byte non_default_homedir;
+ 
+@@ -509,6 +514,25 @@ gnupg_homedir (void)
+   return the_gnupg_homedir;
+ }
+ 
++/* Return the user's home directory */
++const char *
++user_homedir (void)
++{
++  const char *dir;
++  dir = getenv("HOME");
++  if (dir == NULL)
++    {
++       struct passwd *pw = NULL;
++       pw = getpwuid (getuid ());
++       if (pw != NULL)
++         dir = pw->pw_dir;
++       else
++         dir = "/";
++    }
++  if (!the_user_homedir)
++    the_user_homedir = make_absfilename (dir, NULL);
++  return the_user_homedir;
++}
+ 
+ /* Return whether the home dir is the default one.  */
+ int
+@@ -971,6 +995,7 @@ get_default_pinentry_name (int reset)
    } names[] = {
      /* The first entry is what we return in case we found no
         other pinentry.  */
--    { gnupg_bindir, DIRSEP_S "pinentry" EXEEXT_S },
-+    { gnupg_homedir, "/.guix-profile/bin/pinentry" },
++    { user_homedir, "/.guix-profile/bin/pinentry" },
+     { gnupg_bindir, DIRSEP_S "pinentry" EXEEXT_S },
  #ifdef HAVE_W32_SYSTEM
      /* Try Gpg4win directory (with bin and without.) */
-     { w32_rootdir, "\\..\\Gpg4win\\bin\\pinentry.exe" },
diff --git a/gnu/packages/patches/hash-extender-test-suite.patch b/gnu/packages/patches/hash-extender-test-suite.patch
deleted file mode 100644
index 59de52dad49..00000000000
--- a/gnu/packages/patches/hash-extender-test-suite.patch
+++ /dev/null
@@ -1,13 +0,0 @@
-Make the test suite exit with a non-zero exit code if some tests failed.
-Pull request pending upstream: https://github.com/iagox86/hash_extender/pull/13
---- a/test.c
-+++ b/test.c
-@@ -79,5 +79,9 @@ void test_report(void)
-     printf("TESTS PASSED: %d / %d [%2.4f%%]\n", tests_passed, tests_run, 100 * (float)tests_passed / tests_run);
-     printf("--------------------------------------------------------------------------------\n");
-   }
-+
-+  if (tests_passed != tests_run) {
-+      exit(1);
-+  }
- }
diff --git a/gnu/packages/pdf.scm b/gnu/packages/pdf.scm
index 700968d60a6..d565f0dd469 100644
--- a/gnu/packages/pdf.scm
+++ b/gnu/packages/pdf.scm
@@ -16,7 +16,7 @@
 ;;; Copyright © 2017, 2018, 2019, 2020 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;; Copyright © 2019 Alex Griffin <a@ajgrf.com>
 ;;; Copyright © 2019 Ben Sturmfels <ben@sturm.com.au>
-;;; Copyright © 2019 Hartmut Goebel <h.goebel@crazy-compilers.com>
+;;; Copyright © 2019,2020 Hartmut Goebel <h.goebel@crazy-compilers.com>
 ;;; Copyright © 2020 Nicolas Goaziou <mail@nicolasgoaziou.fr>
 ;;;
 ;;; This file is part of GNU Guix.
@@ -93,6 +93,78 @@
   #:use-module (gnu packages xorg)
   #:use-module (srfi srfi-1))
 
+(define-public flyer-composer
+  (package
+    (name "flyer-composer")
+    (version "1.0rc2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (pypi-uri "flyer-composer" version))
+       (sha256
+        (base32 "17igqb5dlcgcq4nimjw6cf9qgz6a728zdx1d0rr90r2z0llcchsv"))))
+    (build-system python-build-system)
+    (arguments
+     `(#:tests? #f ;; TODO
+       #:phases
+       (modify-phases %standard-phases
+         (add-after 'install 'wrap-executable
+           (lambda* (#:key inputs outputs #:allow-other-keys)
+             (let* ((out (assoc-ref outputs "out"))
+                    (qtbase (assoc-ref inputs "qtbase"))
+                    (qml "/lib/qt5/qml"))
+               (wrap-program (string-append out "/bin/flyer-composer-gui")
+                 `("QT_PLUGIN_PATH" ":" =
+                   (,(string-append qtbase "/lib/qt5/plugins")))
+                 `("QT_QPA_PLATFORM_PLUGIN_PATH" ":" =
+                   (,(string-append qtbase "/lib/qt5/plugins/platforms"))))
+               #t))))))
+    (inputs
+     `(("python-pypdf2" ,python-pypdf2)
+       ("python-pyqt" ,python-pyqt)
+       ("python-poppler-qt5" ,python-poppler-qt5)
+       ("qtbase" ,qtbase)))
+    (home-page "http://crazy-compilers.com/flyer-composer")
+    (synopsis "Rearrange PDF pages to print as flyers on one sheet")
+    (description "@command{flyer-composer} can be used to prepare one- or
+two-sided flyers for printing on one sheet of paper.
+
+Imagine you have designed a flyer in A6 format and want to print it using your
+A4 printer.  Of course, you want to print four flyers on each sheet.  This is
+where Flyer Composer steps in, creating a PDF which holds your flyer four
+times.  If you have a second page, Flyer Composer can arrange it the same way
+- even if the second page is in a separate PDF file.
+
+This package contains both the commnd line tool and the gui too.")
+    (license license:agpl3+)))
+
+(define-public flyer-composer-cli
+  (package/inherit flyer-composer
+    (name "flyer-composer-cli")
+    (arguments
+     `(#:tests? #f ;; TODO
+       #:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'remove-gui
+           (lambda _
+             (delete-file-recursively "flyer_composer/gui")
+             (substitute* "setup.cfg"
+               (("^\\s+flyer-composer-gui\\s*=.*") ""))
+             #t)))))
+    (inputs
+     `(("python-pypdf2" ,python-pypdf2)))
+    (description "@command{flyer-composer} can be used to prepare one- or
+two-sided flyers for printing on one sheet of paper.
+
+Imagine you have designed a flyer in A6 format and want to print it using your
+A4 printer.  Of course, you want to print four flyers on each sheet.  This is
+where Flyer Composer steps in, creating a PDF which holds your flyer four
+times.  If you have a second page, Flyer Composer can arrange it the same way
+- even if the second page is in a separate PDF file.
+
+This package contains only the commnd line tool.  If you like to use the gui,
+please install the @code{flyer-composer-gui} package.")))
+
 (define-public poppler
   (package
    (name "poppler")
diff --git a/gnu/packages/php.scm b/gnu/packages/php.scm
index ff4bd8d3a17..992de3af1e1 100644
--- a/gnu/packages/php.scm
+++ b/gnu/packages/php.scm
@@ -353,6 +353,3 @@ systems, web content management systems and web frameworks." )
               license:lgpl2.1+                              ; ext/bcmath/libbcmath
               license:bsd-2                                 ; ext/fileinfo/libmagic
               license:expat))))                             ; ext/date/lib
-
-(define-public php-with-bcmath
-  (deprecated-package "php-with-bcmath" php))
diff --git a/gnu/packages/plotutils.scm b/gnu/packages/plotutils.scm
index a7b6e22030c..a1e32eb3981 100644
--- a/gnu/packages/plotutils.scm
+++ b/gnu/packages/plotutils.scm
@@ -197,14 +197,14 @@ colors, styles, options and details.")
 (define-public asymptote
   (package
     (name "asymptote")
-    (version "2.64")
+    (version "2.65")
     (source
      (origin
        (method url-fetch)
        (uri (string-append "mirror://sourceforge/asymptote/"
                            version "/asymptote-" version ".src.tgz"))
        (sha256
-        (base32 "1x4nmzklzd2xfmm03mgnpg0345dwrwr5czk9gkfl5sx7x1cgx4c0"))))
+        (base32 "0i4qqlvzz69mhdq6kf689sa9rxfb1cwsg1nx88hryb291hddgqqm"))))
     (build-system gnu-build-system)
     ;; Note: The 'asy' binary retains a reference to docdir for use with its
     ;; "help" command in interactive mode, so adding a "doc" output is not
diff --git a/gnu/packages/pulseaudio.scm b/gnu/packages/pulseaudio.scm
index b209fd30762..4ad32d6d1e0 100644
--- a/gnu/packages/pulseaudio.scm
+++ b/gnu/packages/pulseaudio.scm
@@ -10,7 +10,7 @@
 ;;; Copyright © 2018 Pierre Langlois <pierre.langlois@gmx.com>
 ;;; Copyright © 2019 Alex Griffin <a@ajgrf.com>
 ;;; Copyright © 2019 Mathieu Othacehe <m.othacehe@gmail.com>
-;;; Copyright © 2020 Amin Bandali <mab@gnu.org>
+;;; Copyright © 2020 Amin Bandali <bandali@gnu.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
diff --git a/gnu/packages/python-xyz.scm b/gnu/packages/python-xyz.scm
index 8617f634540..a917001dc0e 100644
--- a/gnu/packages/python-xyz.scm
+++ b/gnu/packages/python-xyz.scm
@@ -60,7 +60,7 @@
 ;;; Copyright © 2019 Sam <smbaines8@gmail.com>
 ;;; Copyright © 2019 Jack Hill <jackhill@jackhill.us>
 ;;; Copyright © 2019, 2020 Guillaume Le Vaillant <glv@posteo.net>
-;;; Copyright © 2019 Alex Griffin <a@ajgrf.com>
+;;; Copyright © 2019, 2020 Alex Griffin <a@ajgrf.com>
 ;;; Copyright © 2019 Pierre Langlois <pierre.langlois@gmx.com>
 ;;; Copyright © 2019 Jacob MacDonald <jaccarmac@gmail.com>
 ;;; Copyright © 2019 Giacomo Leidi <goodoldpaul@autistici.org>
@@ -74,6 +74,7 @@
 ;;; Copyright © 2020 Alexandros Theodotou <alex@zrythm.org>
 ;;; Copyright © 2020 Josh Marshall <joshua.r.marshall.1991@gmail.com>
 ;;; Copyright © 2020 Alexandros Theodotou <alex@zrythm.org>
+;;; Copyright © 2020 Lars-Dominik Braun <ldb@leibniz-psychology.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -4641,30 +4642,33 @@ as the original project seems to have been abandoned circa 2007.")
   (package-with-python2 python-socksipy-branch))
 
 (define-public python-socksipychain
-  (package
-    (name "python-socksipychain")
-    (version "2.1.0")
-    (source
-     (origin
-       (method git-fetch)
-       (uri (git-reference
-             (url "https://github.com/pagekite/PySocksipyChain.git")
-             (commit (string-append "v" version))))
-       (file-name (git-file-name name version))
-       (sha256
-        (base32
-         "0idm9a050rd2kbgbz2sk9ib9589kj4xh1xdnggs6xbq2v2y8f6zn"))))
-    (build-system python-build-system)
-    (arguments
-     `(#:tests? #f)) ; Tests try to access the network.
-    (home-page "http://pagekite.net/wiki/Floss/PySocksipyChain/")
-    (synopsis "Python SOCKS module with chained proxies support")
-    (description
-     "SocksiPyChain is a modified version of the SocksiPy SOCKS module, which
+  (let ((commit "eb5ee8741ce006ac0c5c3e2e83204062c348c155")
+        (revision "1")
+        (version "2.1.1"))
+    (package
+      (name "python-socksipychain")
+      (version (git-version version revision commit))
+      (source
+       (origin
+         (method git-fetch)
+         (uri (git-reference
+               (url "https://github.com/pagekite/PySocksipyChain.git")
+               (commit commit)))
+         (file-name (git-file-name name version))
+         (sha256
+          (base32
+           "0fpphn6xnpm7qk8a914s4abycsbq9w6qkci07my632v0fylnm5n7"))))
+      (build-system python-build-system)
+      (arguments
+       `(#:tests? #f))                  ; Tests try to access the network.
+      (home-page "http://pagekite.net/wiki/Floss/PySocksipyChain/")
+      (synopsis "Python SOCKS module with chained proxies support")
+      (description
+       "SocksiPyChain is a modified version of the SocksiPy SOCKS module, which
 adds support for arbitrary chaining of proxy servers and various modes of
 TLS/SSL encryption.  It was developed for use in PageKite, and also includes
 a simple netcat replacement with chaining support.")
-    (license license:bsd-3)))
+      (license license:bsd-3))))
 
 (define-public python-pycodestyle
   (package
@@ -11854,12 +11858,6 @@ hardware-accelerated multitouch applications.")
 (define-public python2-kivy
   (package-with-python2 python-kivy))
 
-(define-public python-kivy-next
-  (deprecated-package "python-kivy-next" python-kivy))
-
-(define-public python2-kivy-next
-  (deprecated-package "python2-kivy-next" python2-kivy))
-
 (define-public python-binaryornot
   (package
     (name "python-binaryornot")
@@ -15734,14 +15732,14 @@ and other tools.")
 (define-public python-typing-extensions
   (package
     (name "python-typing-extensions")
-    (version "3.7.2")
+    (version "3.7.4.1")
     (source
      (origin
        (method url-fetch)
        (uri (pypi-uri "typing_extensions" version))
        (sha256
         (base32
-         "0wfsv71pvkyf2na938l579jh0v3kzl6g744ijgnahcwd4d9x0b7v"))))
+         "1wj1vcgbnm20aiinmphyxfrbv3qi9xdhvw89ab3qm42y9n4wq7h9"))))
     (build-system python-build-system)
     (home-page
      "https://github.com/python/typing/blob/master/typing_extensions/README.rst")
@@ -18781,3 +18779,55 @@ allows to start and stop daemons for a quick throw-away usage.  This is typicall
 useful when needing these daemons to run integration testing.  It originally
 evolved from its precursor @code{overtest}.")
     (license license:asl2.0)))
+
+(define-public python-pytest-check-links
+  (package
+    (name "python-pytest-check-links")
+    (version "0.3.0")
+    (source
+     (origin
+       (method url-fetch)
+       ;; URI uses underscores
+       (uri (pypi-uri "pytest_check_links" version))
+       (sha256
+        (base32
+         "12x3wmrdzm6wgk0vz02hb769h68nr49q47w5q1pj95pc89hsa34v"))))
+    (build-system python-build-system)
+    (propagated-inputs
+     `(("python-docutils" ,python-docutils)
+       ("python-html5lib" ,python-html5lib)
+       ("python-nbconvert" ,python-nbconvert)
+       ("python-nbformat" ,python-nbformat)
+       ("python-pytest" ,python-pytest)
+       ("python-six" ,python-six)))
+    (native-inputs
+     `(("python-pbr-minimal" ,python-pbr-minimal)))
+    (home-page "https://github.com/minrk/pytest-check-links")
+    (synopsis "Check links in files")
+    (description "This package provides a pytest plugin that checks URLs for
+HTML-containing files.")
+    (license license:bsd-3)))
+
+(define-public python-json5
+  (package
+    (name "python-json5")
+    (version "0.8.5")
+    (source
+     (origin
+       ;; sample.json5 is missing from PyPi source tarball
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/dpranke/pyjson5.git")
+             (commit (string-append "v" version))))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32 "0nyngj18jlkgvm1177lc3cj47wm4yh3dqigygvcvw7xkyryafsqn"))))
+    (build-system python-build-system)
+    (home-page "https://github.com/dpranke/pyjson5")
+    (synopsis
+     "Python implementation of the JSON5 data format")
+    (description
+     "JSON5 extends the JSON data interchange format to make it slightly more
+usable as a configuration language.  This Python package implements parsing and
+dumping of JSON5 data structures.")
+    (license license:asl2.0)))
diff --git a/gnu/packages/qt.scm b/gnu/packages/qt.scm
index 368cfb7e152..a5e2300f970 100644
--- a/gnu/packages/qt.scm
+++ b/gnu/packages/qt.scm
@@ -2374,7 +2374,7 @@ different kinds of sliders, and much more.")
 (define-public qtwebkit
   (package
     (name "qtwebkit")
-    (version "5.212.0-alpha3")
+    (version "5.212.0-alpha4")
     (source
       (origin
         (method url-fetch)
@@ -2382,12 +2382,12 @@ different kinds of sliders, and much more.")
                             "qtwebkit-" version "/qtwebkit-" version ".tar.xz"))
         (sha256
          (base32
-          "05syvwi3jw9abwsc93rmjkna0vyh6bkfrsqhwir48ms54icfwzim"))
+          "1rm9sjkabxna67dl7myx9d9vpdyfxfdhrk9w7b94srkkjbd2d8cw"))
         (patches (search-patches "qtwebkit-pbutils-include.patch"))))
     (build-system cmake-build-system)
     (native-inputs
      `(("perl" ,perl)
-       ("python" ,python-2.7)
+       ("python" ,python)
        ("ruby" ,ruby)
        ("bison" ,bison)
        ("flex" ,flex)
diff --git a/gnu/packages/rust.scm b/gnu/packages/rust.scm
index 76afdefabe2..6774603db6f 100644
--- a/gnu/packages/rust.scm
+++ b/gnu/packages/rust.scm
@@ -55,6 +55,32 @@
   #:use-module (ice-9 match)
   #:use-module (srfi srfi-26))
 
+;; This is the hash for the empty file, and the reason it's relevant is not
+;; the most obvious.
+;;
+;; The root of the problem is that Cargo keeps track of a file called
+;; Cargo.lock, that contains the hash of the tarball source of each dependency.
+;;
+;; However, tarball sources aren't handled well by Guix because of the need to
+;; patch shebangs in any helper scripts. This is why we use Cargo's vendoring
+;; capabilities, where instead of the tarball, a directory is provided in its
+;; place. (In the case of rustc, the source code already ships with vendored
+;; dependencies, but crates built with cargo-build-system undergo vendoring
+;; during the build.)
+;;
+;; To preserve the advantages of checksumming, vendored dependencies contain
+;; a file called .cargo-checksum.json, which contains the hash of the tarball,
+;; as well as the list of files in it, with the hash of each file.
+;;
+;; The patch-cargo-checksums phase of cargo-build-system runs after
+;; any Guix-specific patches to the vendored dependencies and regenerates the
+;; .cargo-checksum.json files, but it's hard to know the tarball checksum that
+;; should be written to the file - and taking care of any unhandled edge case
+;; would require rebuilding everything that depends on rust. This is why we lie,
+;; and say that the tarball has the hash of an empty file. It's not a problem
+;; because cargo-build-system removes the Cargo.lock file. We can't do that
+;; for rustc because of a quirk of its build system, so we modify the lock file
+;; to substitute the hash.
 (define %cargo-reference-hash
   "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855")
 
@@ -912,9 +938,30 @@ jemalloc = \"" jemalloc "/lib/libjemalloc_pic.a" "\"
              (replace 'disable-amd64-avx-test
                (lambda _
                  (substitute* "src/test/ui/run-pass/issues/issue-44056.rs"
-                  (("only-x86_64") "ignore-test"))
+                  (("only-x86_64") "ignore-test"))
                   #t)))))))))
 
+(define (patch-command-exec-tests-phase test-path)
+  "The command-exec.rs test moves around between releases.  We need to apply
+a Guix-specific patch to it for each release.  This function generates the phase
+that applies said patch, parametrized by the test-path.  This is done this way
+because the phase is more complex than the equivalents for other tests that
+move around."
+ `(lambda* (#:key inputs #:allow-other-keys)
+    (let ((coreutils (assoc-ref inputs "coreutils")))
+      (substitute* ,test-path
+        ;; This test suite includes some tests that the stdlib's
+        ;; `Command` execution properly handles situations where
+        ;; the environment or PATH variable are empty, but this
+        ;; fails since we don't have `echo` available in the usual
+        ;; Linux directories.
+        ;; NB: the leading space is so we don't fail a tidy check
+        ;; for trailing whitespace, and the newlines are to ensure
+        ;; we don't exceed the 100 chars tidy check as well
+        ((" Command::new\\(\"echo\"\\)")
+         (string-append "\nCommand::new(\"" coreutils "/bin/echo\")\n")))
+      #t)))
+
 (define-public rust-1.31
   (let ((base-rust
          (rust-bootstrapped-package rust-1.30 "1.31.1"
@@ -926,26 +973,14 @@ jemalloc = \"" jemalloc "/lib/libjemalloc_pic.a" "\"
          ((#:phases phases)
           `(modify-phases ,phases
              (add-after 'patch-tests 'patch-command-exec-tests
-               (lambda* (#:key inputs #:allow-other-keys)
-                 (let ((coreutils (assoc-ref inputs "coreutils")))
-                   (substitute* "src/test/run-pass/command-exec.rs"
-                     ;; This test suite includes some tests that the stdlib's
-                     ;; `Command` execution properly handles situations where
-                     ;; the environment or PATH variable are empty, but this
-                     ;; fails since we don't have `echo` available in the usual
-                     ;; Linux directories.
-                     ;; NB: the leading space is so we don't fail a tidy check
-                     ;; for trailing whitespace, and the newlines are to ensure
-                     ;; we don't exceed the 100 chars tidy check as well
-                     ((" Command::new\\(\"echo\"\\)")
-                      (string-append "\nCommand::new(\"" coreutils "/bin/echo\")\n")))
-                   #t)))
-              ;; The test has been moved elsewhere.
-              (replace 'disable-amd64-avx-test
-                (lambda _
-                  (substitute* "src/test/ui/issues/issue-44056.rs"
-                   (("only-x86_64") "ignore-test"))
-                  #t))
+               ,(patch-command-exec-tests-phase
+                  "src/test/run-pass/command-exec.rs"))
+             ;; The test has been moved elsewhere.
+             (replace 'disable-amd64-avx-test
+               (lambda _
+                 (substitute* "src/test/ui/issues/issue-44056.rs"
+                  (("only-x86_64") "ignore-test"))
+                 #t))
              (add-after 'patch-tests 'patch-process-docs-rev-cmd
                (lambda* _
                  ;; Disable some doc tests which depend on the "rev" command
@@ -1087,7 +1122,7 @@ jemalloc = \"" jemalloc "/lib/libjemalloc_pic.a" "\"
           `(modify-phases ,phases
              (delete 'patch-process-docs-rev-cmd))))))))
 
-(define-public rust
+(define-public rust-1.37
   (let ((base-rust
          (rust-bootstrapped-package rust-1.36 "1.37.0"
            "1hrqprybhkhs6d9b5pjskfnc5z9v2l2gync7nb39qjb5s0h703hj")))
@@ -1103,3 +1138,45 @@ jemalloc = \"" jemalloc "/lib/libjemalloc_pic.a" "\"
                    (mkdir-p cargo-home)
                    (setenv "CARGO_HOME" cargo-home)
                    #t))))))))))
+
+(define-public rust-1.38
+  (let ((base-rust
+         (rust-bootstrapped-package rust-1.37 "1.38.0"
+           "101dlpsfkq67p0hbwx4acqq6n90dj4bbprndizpgh1kigk566hk4")))
+    (package
+      (inherit base-rust)
+      (arguments
+       (substitute-keyword-arguments (package-arguments base-rust)
+         ((#:phases phases)
+          `(modify-phases ,phases
+             (replace 'patch-command-exec-tests
+               ,(patch-command-exec-tests-phase
+                  "src/test/ui/command-exec.rs"))
+             (add-after 'patch-tests 'patch-command-uid-gid-test
+               (lambda _
+                 (substitute* "src/test/ui/command-uid-gid.rs"
+                   (("/bin/sh") (which "sh"))
+                   (("ignore-sgx") "ignore-sgx\n// ignore-tidy-linelength"))
+                 #t)))))))))
+
+(define-public rust-1.39
+  (let ((base-rust
+         (rust-bootstrapped-package rust-1.38 "1.39.0"
+           "0mwkc1bnil2cfyf6nglpvbn2y0zfbv44zfhsd5qg4c9rm6vgd8dl")))
+    (package
+      (inherit base-rust)
+      (arguments
+       (substitute-keyword-arguments (package-arguments base-rust)
+         ((#:phases phases)
+          `(modify-phases ,phases
+             (replace 'patch-cargo-checksums
+               ;; The Cargo.lock format changed.
+               (lambda* _
+                 (use-modules (guix build cargo-utils))
+                 (substitute* "Cargo.lock"
+                   (("(checksum = )\".*\"" all name)
+                    (string-append name "\"" ,%cargo-reference-hash "\"")))
+                 (generate-all-checksums "vendor")
+                 #t)))))))))
+
+(define-public rust rust-1.37)
diff --git a/gnu/packages/speech.scm b/gnu/packages/speech.scm
index 5fdf2cdbd8b..8ee6fbfdc4b 100644
--- a/gnu/packages/speech.scm
+++ b/gnu/packages/speech.scm
@@ -5,6 +5,7 @@
 ;;; Copyright © 2018 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;; Copyright © 2016 Kei Kebreau <kkebreau@posteo.net>
 ;;; Copyright © 2019 Ricardo Wurmus <rekado@elephly.net>
+;;; Copyright © 2020 Nicolas Goaziou <mail@nicolasgoaziou.fr>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -32,15 +33,20 @@
   #:use-module (gnu packages audio)
   #:use-module (gnu packages autotools)
   #:use-module (gnu packages base)            ;for 'which'
+  #:use-module (gnu packages bison)
   #:use-module (gnu packages compression)
+  #:use-module (gnu packages documentation)
   #:use-module (gnu packages emacs)
   #:use-module (gnu packages gcc)
   #:use-module (gnu packages glib)
+  #:use-module (gnu packages gstreamer)
   #:use-module (gnu packages linux)
   #:use-module (gnu packages ncurses)
+  #:use-module (gnu packages perl)
   #:use-module (gnu packages pkg-config)
   #:use-module (gnu packages pulseaudio)
   #:use-module (gnu packages python)
+  #:use-module (gnu packages swig)
   #:use-module (gnu packages texinfo)
   #:use-module (gnu packages textutils))
 
@@ -471,3 +477,64 @@ The system is written in C++ and uses the Edinburgh Speech Tools Library for
 low level architecture and has a Scheme (SIOD) based command interpreter for
 control.")
     (license (license:non-copyleft "file://COPYING"))))
+
+(define-public sphinxbase
+  (package
+    (name "sphinxbase")
+    (version "5prealpha")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "mirror://sourceforge/cmusphinx/"
+                           "sphinxbase/" version "/"
+                           "sphinxbase-" version ".tar.gz"))
+       (sha256
+        (base32 "0vr4k8pv5a8nvq9yja7kl13b5lh0f9vha8fc8znqnm8bwmcxnazp"))))
+    (build-system gnu-build-system)
+    (arguments
+     `(#:parallel-tests? #f))           ;tests fail otherwise
+    (native-inputs
+     `(("bison" ,bison)
+       ("doxygen" ,doxygen)
+       ("perl" ,perl)                   ;for tests
+       ("python" ,python)
+       ("swig" ,swig)))
+    (inputs
+     `(("pulseaudio" ,pulseaudio)))
+    (home-page "https://cmusphinx.github.io/")
+    (synopsis "Support library required by Pocketsphinx and Sphinxtrain")
+    (description "This package contains the basic libraries shared by
+the CMU Sphinx trainer and all the Sphinx decoders (Sphinx-II,
+Sphinx-III, and PocketSphinx), as well as some common utilities for
+manipulating acoustic feature and audio files.")
+    (license license:bsd-4)))
+
+(define-public pocketsphinx
+  (package
+    (name "pocketsphinx")
+    (version "5prealpha")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "mirror://sourceforge/cmusphinx/"
+                           "pocketsphinx/" version "/"
+                           "pocketsphinx-" version ".tar.gz"))
+       (sha256
+        (base32 "1n9yazzdgvpqgnfzsbl96ch9cirayh74jmpjf7svs4i7grabanzg"))))
+    (build-system gnu-build-system)
+    (native-inputs
+     `(("pkg-config" ,pkg-config)
+       ("perl" ,perl)                   ;for tests
+       ("python" ,python)
+       ("swig" ,swig)))
+    (inputs
+     `(("gstreamer" ,gstreamer)
+       ("libcap" ,libcap)
+       ("pulseaudio" ,pulseaudio)
+       ("sphinxbase" ,sphinxbase)))
+    (home-page "https://cmusphinx.github.io/")
+    (synopsis "Recognizer library written in C")
+    (description "PocketSphinx is one of Carnegie Mellon University's
+large vocabulary, speaker-independent continuous speech recognition
+engine.")
+    (license license:bsd-2)))
diff --git a/gnu/packages/statistics.scm b/gnu/packages/statistics.scm
index 5feae3fb921..1ffce54913b 100644
--- a/gnu/packages/statistics.scm
+++ b/gnu/packages/statistics.scm
@@ -441,14 +441,14 @@ Applied Statistics with S\" (4th edition, 2002) by Venables and Ripley.")
 (define-public r-class
   (package
     (name "r-class")
-    (version "7.3-15")
+    (version "7.3-16")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "class" version))
        (sha256
         (base32
-         "1x1hqz8xyhbpq4krsh02glqnlzcch25agkmn4a3da9n723b37gzn"))))
+         "1jpdgj0lsi60q0mqbhfw809w8d66whix27y6wpdzll6775g3j3ll"))))
     (build-system r-build-system)
     (propagated-inputs
      `(("r-mass" ,r-mass)))
@@ -1762,14 +1762,14 @@ side.")
 (define-public r-locfit
   (package
     (name "r-locfit")
-    (version "1.5-9.2")
+    (version "1.5-9.4")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "locfit" version))
        (sha256
         (base32
-         "00l0s6cxnv95zybkgki0380fih2kr1kbm7m88x56phklln3nx27b"))))
+         "1vcw16qww4v4547w0gfvhqg60l051bsdlxa6zfcgcj9xbxf6dlyr"))))
     (build-system r-build-system)
     (propagated-inputs
      `(("r-lattice" ,r-lattice)))
diff --git a/gnu/packages/syndication.scm b/gnu/packages/syndication.scm
index a84281364f8..6c0997da86c 100644
--- a/gnu/packages/syndication.scm
+++ b/gnu/packages/syndication.scm
@@ -84,16 +84,10 @@ interface that might look familiar to @command{mutt} or @command{slrn} users.
 
 Newsboat supports OPML import/exports, HTML rendering, podcasts (with
 @command{podboat}), off-line reading, searching and storing articles to your
-file system, and many more features.
-
-It started life as a fork of the currently unmaintained Newsbeuter.")
+file system, and many more features.")
     (license (list license:gpl2+        ; filter/*
                    license:expat))))    ; everything else
 
-(define-public newsbeuter
-  ;; Newsbeuter is unmaintained with multiple CVEs, and was forked as Newsboat.
-  (deprecated-package "newsbeuter" newsboat))
-
 (define-public rtv
   (package
     (name "rtv")
diff --git a/gnu/packages/terminals.scm b/gnu/packages/terminals.scm
index 3eeda9d417a..226f3ee05a4 100644
--- a/gnu/packages/terminals.scm
+++ b/gnu/packages/terminals.scm
@@ -19,6 +19,7 @@
 ;;; Copyright © 2019 Brett Gilio <brettg@gnu.org>
 ;;; Copyright © 2020 Jakub Kądziołka <kuba@kadziolka.net>
 ;;; Copyright © 2020 Valentin Ignatev <valentignatev@gmail.com>
+;;; Copyright © 2020 Michael Rohleder <mike@rohleder.de>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -896,7 +897,7 @@ per-line fullscreen terminal rendering, and keyboard input event reporting.")
 (define-public tmate
   (package
     (name "tmate")
-    (version "2.2.1")
+    (version "2.4.0")
     (source
      (origin
        (method git-fetch)
@@ -906,7 +907,7 @@ per-line fullscreen terminal rendering, and keyboard input event reporting.")
        (file-name (git-file-name name version))
        (sha256
         (base32
-         "0pfl9vrswzim9ydi1n652h3rax2zrmy6sqkp0r09yy3lw83h4y1r"))))
+         "0x5c31yq7ansmiy20a0qf59wagba9v3pq97mlkxrqxn4n1gcc6vi"))))
     (build-system gnu-build-system)
     (inputs
      `(("libevent" ,libevent)
diff --git a/gnu/packages/version-control.scm b/gnu/packages/version-control.scm
index d626f173f91..75de83ab60f 100644
--- a/gnu/packages/version-control.scm
+++ b/gnu/packages/version-control.scm
@@ -152,8 +152,6 @@ as well as the classic centralized workflow.")
 (define-public git
   (package
    (name "git")
-   ;; XXX When updating Git, check if the special 'git-source' input to cgit
-   ;; needs to be updated as well.
    (version "2.26.0")
    (source (origin
             (method url-fetch)
@@ -810,7 +808,7 @@ collaboration using typical untrusted file hosts or services.")
   (package
     (name "cgit")
     ;; Update the ‘git-source’ input as well.
-    (version "1.2.2")
+    (version "1.2.3")
     (source (origin
               (method url-fetch)
               (uri (string-append
@@ -818,7 +816,7 @@ collaboration using typical untrusted file hosts or services.")
                     version ".tar.xz"))
               (sha256
                (base32
-                "0dmjsisigjz5k4gw7gm55qhm3wazzbm4cg7a5dwf0gqg9nacx5rz"))))
+                "193d990ym10qlslk0p8mjwp2j6rhqa7fq0y1iff65lvbyv914pss"))))
     (build-system gnu-build-system)
     (arguments
      '(#:tests? #f ; XXX: fail to build the in-source git.
@@ -898,9 +896,9 @@ collaboration using typical untrusted file hosts or services.")
            (method url-fetch)
            ;; cgit is tightly bound to git.  Use GIT_VER from the Makefile,
            ;; which may not match the current (package-version git).
-           (uri "mirror://kernel.org/software/scm/git/git-2.25.0.tar.xz")
+           (uri "mirror://kernel.org/software/scm/git/git-2.25.1.tar.xz")
            (sha256
-            (base32 "1l58v42aazj0x9276gk8r9mwyl9pgp9w99aakz4xfhzv7wd2jq60"))))
+            (base32 "09lzwa183nblr6l8ib35g2xrjf9wm9yhk3szfvyzkwivdv69c9r2"))))
        ("openssl" ,openssl)
        ("groff" ,groff)
        ("python" ,python)
diff --git a/gnu/packages/video.scm b/gnu/packages/video.scm
index 112c7c31e2c..23533dfdbf9 100644
--- a/gnu/packages/video.scm
+++ b/gnu/packages/video.scm
@@ -1640,7 +1640,7 @@ To load this plugin, specify the following option when starting mpv:
 (define-public youtube-dl
   (package
     (name "youtube-dl")
-    (version "2020.03.08")
+    (version "2020.03.24")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://github.com/ytdl-org/youtube-dl/"
@@ -1648,7 +1648,7 @@ To load this plugin, specify the following option when starting mpv:
                                   version ".tar.gz"))
               (sha256
                (base32
-                "1xbka14wnalcqkhibfcqw8f5bw1m9b1f44719yifv1jk0614q4bn"))))
+                "05l4asakakxn53wrvxn6c03fd80zdizdbj6r2cj8c1ja3sj9i8s5"))))
     (build-system python-build-system)
     (arguments
      ;; The problem here is that the directory for the man page and completion
@@ -1860,6 +1860,8 @@ audio, images) from the Web.  It can use either mpv or vlc for playback.")
      `(#:modules ((guix build perl-build-system)
                   (guix build utils)
                   (srfi srfi-26))
+       ;; gtk-2/3 variants are both installed by default but the gtk3 variant
+       ;; is broken without perl-gtk3.
        #:module-build-flags '("--gtk2")
        #:phases
        (modify-phases %standard-phases
@@ -2209,7 +2211,7 @@ capabilities.")
 (define-public vapoursynth
   (package
     (name "vapoursynth")
-    (version "48")
+    (version "49")
     (source (origin
               (method git-fetch)
               (uri (git-reference
@@ -2218,7 +2220,7 @@ capabilities.")
               (file-name (git-file-name name version))
               (sha256
                (base32
-                "1i6163bidlp0p9zcnxpsphr44ayfzd51fig4ri7vbrbl9lw9jaih"))))
+                "1d298mlb24nlc2x7pixfbkd0qbpv4c706c32idsgpi96z1spkhvl"))))
     (build-system gnu-build-system)
     (native-inputs
      `(("autoconf" ,autoconf)
@@ -2309,9 +2311,6 @@ and custom quantization matrices.")
 from sites like Twitch.tv and pipes them into a video player of choice.")
     (license license:bsd-2)))
 
-(define-public livestreamer
-  (deprecated-package "livestreamer" streamlink))
-
 (define-public twitchy
   (let ((commit "9beb36d80b16662414129693e74fa3a2fd97554e")) ; 3.4 has no tag
     (package
diff --git a/gnu/packages/virtualization.scm b/gnu/packages/virtualization.scm
index efb325ac8f4..fbafed9ed43 100644
--- a/gnu/packages/virtualization.scm
+++ b/gnu/packages/virtualization.scm
@@ -913,9 +913,6 @@ monitor/GPU.")
      (supported-systems '("i686-linux" "x86_64-linux"))
      (license license:gpl2+))))
 
-(define-public lookingglass
-  (deprecated-package "lookingglass" looking-glass-client))
-
 (define-public runc
   (package
     (name "runc")
diff --git a/gnu/packages/vulkan.scm b/gnu/packages/vulkan.scm
index 61a01f56b81..d3b4e5cc33d 100644
--- a/gnu/packages/vulkan.scm
+++ b/gnu/packages/vulkan.scm
@@ -218,9 +218,6 @@ and the ICD.")
                    (license:x11-style "file://COPYRIGHT.txt")
                    license:bsd-3))))
 
-(define-public vulkan-icd-loader
-  (deprecated-package "vulkan-icd-loader" vulkan-loader))
-
 (define-public vulkan-tools
   (package
     (name "vulkan-tools")
diff --git a/gnu/packages/web.scm b/gnu/packages/web.scm
index 781f76a1329..2b1585c8e3b 100644
--- a/gnu/packages/web.scm
+++ b/gnu/packages/web.scm
@@ -42,6 +42,7 @@
 ;;; Copyright © 2020 Alexandros Theodotou <alex@zrythm.org>
 ;;; Copyright © 2020 Pierre Neidhardt <mail@ambrevar.xyz>
 ;;; Copyright © 2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+;;; Copyright © 2018, 2019, 2020 Björn Höfling <bjoern.hoefling@bjoernhoefling.de>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -4385,8 +4386,8 @@ CDF, Atom 0.3, and Atom 1.0 feeds.")
   (package-with-python2 python-feedparser))
 
 (define-public guix-data-service
-  (let ((commit "18eb9dfdcb3174bfd4bab5b9089acffa13aa1214")
-        (revision "18"))
+  (let ((commit "d1c243f7fd8902f359ff06fb78dce663cf4297ce")
+        (revision "19"))
     (package
       (name "guix-data-service")
       (version (string-append "0.0.1-" revision "." (string-take commit 7)))
@@ -4398,11 +4399,13 @@ CDF, Atom 0.3, and Atom 1.0 feeds.")
                 (file-name (git-file-name name version))
                 (sha256
                  (base32
-                  "0lb78cqzqaz0r4sspg272w2a3yhzhqah30j0kxf0z182b0qpmp37"))))
+                  "1ji8d4vwmv7j9h7z96hvzi3zvik594yngjrdal37w13fbxy2v6sw"))))
       (build-system gnu-build-system)
       (arguments
        '(#:modules ((guix build utils)
                     (guix build gnu-build-system)
+                    (ice-9 ftw)
+                    (ice-9 match)
                     (ice-9 rdelim)
                     (ice-9 popen))
          #:test-target "check-with-tmp-database"
@@ -4430,20 +4433,28 @@ CDF, Atom 0.3, and Atom 1.0 feeds.")
                                           "/site-ccache")))
                  (for-each
                   (lambda (file)
+                    (simple-format (current-error-port)
+                                   "wrapping: ~A\n"
+                                   (string-append bin "/" file))
                     (wrap-program (string-append bin "/" file)
                       `("PATH" ":" prefix
-                        (,bin))
+                        ,(cons*
+                          bin
+                          (map (lambda (input)
+                                 (string-append
+                                  (assoc-ref inputs input)
+                                  "/bin"))
+                               '("ephemeralpg"
+                                 "util-linux"
+                                 "postgresql"))))
                       `("GUILE_LOAD_PATH" ":" prefix
                         (,scm ,(getenv "GUILE_LOAD_PATH")))
                       `("GUILE_LOAD_COMPILED_PATH" ":" prefix
                         (,go ,(getenv "GUILE_LOAD_COMPILED_PATH")))))
-                  '("guix-data-service"
-                    "guix-data-service-process-branch-updated-email"
-                    "guix-data-service-process-branch-updated-mbox"
-                    "guix-data-service-process-job"
-                    "guix-data-service-process-jobs"
-                    "guix-data-service-manage-build-servers"
-                    "guix-data-service-query-build-servers"))
+                  (scandir bin
+                           (match-lambda
+                             ((or "." "..") #f)
+                             (_ #t))))
                  #t)))
            (delete 'strip))))           ; As the .go files aren't compatible
       (inputs
@@ -4452,13 +4463,14 @@ CDF, Atom 0.3, and Atom 1.0 feeds.")
          ("guile-json" ,guile3.0-json)
          ("guile-email" ,guile3.0-email)
          ("guile-squee" ,guile3.0-squee)
-         ("postgresql" ,postgresql)
+         ("ephemeralpg" ,ephemeralpg)
+         ("util-linux" ,util-linux)
+         ("postgresql" ,postgresql-11)
          ("sqitch" ,sqitch)))
       (native-inputs
        `(("guile" ,guile-3.0)
          ("autoconf" ,autoconf)
          ("automake" ,automake)
-         ("ephemeralpg" ,ephemeralpg)
          ("emacs-minimal" ,emacs-minimal)
          ("emacs-htmlize" ,emacs-htmlize)
          ("pkg-config" ,pkg-config)))
@@ -6125,14 +6137,14 @@ encoder/decoder based on the draft-12 specification for UBJSON.")
 (define-public java-tomcat
   (package
     (name "java-tomcat")
-    (version "8.5.46")
+    (version "8.5.53")
     (source (origin
               (method url-fetch)
               (uri (string-append "mirror://apache/tomcat/tomcat-8/v"
                                   version "/src/apache-tomcat-" version "-src.tar.gz"))
               (sha256
                (base32
-                "0fb49gsqa3r6jrwc54yynvsakq9qbzr2pbxr7a29c2zvja2v65iq"))
+                "15lwq3clf21hzk7mma70sffpxjqn8ww5mjq6zhmwcp4m17m22z26"))
               (modules '((guix build utils)))
               ;; Delete bundled jars.
               (snippet
@@ -6210,6 +6222,7 @@ encoder/decoder based on the draft-12 specification for UBJSON.")
              (let ((out (assoc-ref outputs "out")))
                (copy-recursively "output/build" out))
              #t)))))
+    (properties '((cpe-name . "tomcat")))
     (home-page "https://tomcat.apache.org")
     (synopsis "Java Servlet, JavaServer Pages, Java Expression Language and Java
 WebSocket")
diff --git a/gnu/packages/wm.scm b/gnu/packages/wm.scm
index 25ec278e2ce..5d28cac38a2 100644
--- a/gnu/packages/wm.scm
+++ b/gnu/packages/wm.scm
@@ -172,8 +172,7 @@ the leaves of a full binary tree.")
     (arguments
      '(#:phases
        (modify-phases %standard-phases
-         (delete 'configure)
-         (delete 'check)
+         (delete 'configure)            ; no configure script
          (add-after 'install 'install-xsession
            (lambda* (#:key outputs #:allow-other-keys)
              (let* ((out (assoc-ref outputs "out"))
@@ -195,6 +194,8 @@ the leaves of a full binary tree.")
          (list "CC=gcc"
                (string-append "PREFIX=''")
                (string-append "DESTDIR=" out)
+               (string-append "FISHCOMPLETIONDIR="
+                              "/share/fish/vendor_completions.d")
                (string-append "BASHCOMPLETIONDIR=" out
                               "/etc/bash_completion.d")))))
     (synopsis "Tiling window manager for X11")
diff --git a/gnu/packages/xdisorg.scm b/gnu/packages/xdisorg.scm
index 9ecfdcf12f5..937595cb9de 100644
--- a/gnu/packages/xdisorg.scm
+++ b/gnu/packages/xdisorg.scm
@@ -1064,7 +1064,7 @@ Escape key when Left Control is pressed and released on its own.")
 (define-public libwacom
   (package
     (name "libwacom")
-    (version "1.2")
+    (version "1.3")
     (source (origin
               (method url-fetch)
               (uri (string-append
@@ -1072,7 +1072,7 @@ Escape key when Left Control is pressed and released on its own.")
                     "libwacom-" version "/libwacom-" version ".tar.bz2"))
               (sha256
                (base32
-                "1hv3z2qkvycqcyv99zfpbbgrlbyppdq8kk2y9x51578mwbgcy162"))))
+                "0g48cdg2qpvrr2nk8ccibjg3iv7iqskdv66izxacqx70w47y1771"))))
     (build-system glib-or-gtk-build-system)
     (arguments
      `(#:configure-flags '("--disable-static")))
@@ -1213,7 +1213,7 @@ protocol.")
 (define-public xscreensaver
   (package
     (name "xscreensaver")
-    (version "5.43")
+    (version "5.44")
     (source
      (origin
        (method url-fetch)
@@ -1221,7 +1221,7 @@ protocol.")
         (string-append "https://www.jwz.org/xscreensaver/xscreensaver-"
                        version ".tar.gz"))
        (sha256
-        (base32 "1571pj1a9998sq14y9366s2rw9wd2kq3l3dvvsk610vyd0fki3qm"))))
+        (base32 "15bv05vpfjwsrqbazrjmm382jd7vvw0mp6y9vasn6wvxzjf0in3k"))))
     (build-system gnu-build-system)
     (arguments
      `(#:tests? #f                      ; no check target
@@ -1237,7 +1237,7 @@ protocol.")
                            "--without-readdisplay")
        #:make-flags (list (string-append "AD_DIR="
                                          (assoc-ref %outputs "out")
-                                         "/usr/lib/X11/app-defaults"))))
+                                         "/lib/X11/app-defaults"))))
     (native-inputs
      `(("pkg-config" ,pkg-config)
        ("intltool" ,intltool)))
diff --git a/gnu/packages/xfce.scm b/gnu/packages/xfce.scm
index b6eba0a72c7..5b9aa498271 100644
--- a/gnu/packages/xfce.scm
+++ b/gnu/packages/xfce.scm
@@ -1158,7 +1158,7 @@ A plugin for the Xfce panel is also available.")
 (define-public xfce4-screensaver
   (package
     (name "xfce4-screensaver")
-    (version "0.1.8")
+    (version "0.1.9")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://archive.xfce.org/src/apps/"
@@ -1168,7 +1168,7 @@ A plugin for the Xfce panel is also available.")
                                   version ".tar.bz2"))
               (sha256
                (base32
-                "1mv0r150yb29kji2rr2462g9p574bqjax1lb6bzcqgpxlmg08mj0"))))
+                "11p48yyjgy6crwfbyvm16yg0rkzn90ssd2wygzmwvwrx3wkzyhsp"))))
     (build-system gnu-build-system)
     (arguments
      `(#:phases
diff --git a/gnu/services/nfs.scm b/gnu/services/nfs.scm
index cbaa97b2fd3..4e358197e26 100644
--- a/gnu/services/nfs.scm
+++ b/gnu/services/nfs.scm
@@ -245,8 +245,8 @@
   nfs-configuration?
   (nfs-utils           nfs-configuration-nfs-utils
                        (default nfs-utils))
-  (nfs-version         nfs-configuration-nfs-version
-                       (default #f)) ; string
+  (nfs-versions        nfs-configuration-nfs-versions
+                       (default '("4.2" "4.1" "4.0")))
   (exports             nfs-configuration-exports
                        (default '()))
   (rpcmountd-port      nfs-configuration-rpcmountd-port
@@ -270,7 +270,7 @@
 (define (nfs-shepherd-services config)
   "Return a list of <shepherd-service> for the NFS daemons with CONFIG."
   (match-record config <nfs-configuration>
-    (nfs-utils nfs-version exports
+    (nfs-utils nfs-versions exports
                rpcmountd-port rpcstatd-port nfsd-port nfsd-threads
                pipefs-directory debug)
     (list (shepherd-service
@@ -323,15 +323,16 @@
            (requirement '(/proc/fs/nfsd rpc.statd networking))
            (start
             #~(lambda _
-                (zero? (system* #$(file-append nfs-utils "/sbin/rpc.nfsd")
-                                #$@(if (member 'nfsd debug)
-                                       '("--debug")
-                                       '())
-                                "--port" #$(number->string nfsd-port)
-                                #$@(if nfs-version
-                                       '("--nfs-version" nfs-version)
-                                       '())
-                                #$(number->string nfsd-threads)))))
+                (zero? (apply system* #$(file-append nfs-utils "/sbin/rpc.nfsd")
+                              (list
+                               #$@(if (member 'nfsd debug)
+                                      '("--debug")
+                                      '())
+                               "--port" #$(number->string nfsd-port)
+                               #$@(map (lambda (version)
+                                         (string-append "--nfs-version=" version))
+                                       nfs-versions)
+                               #$(number->string nfsd-threads))))))
            (stop
             #~(lambda _
                 (zero?
diff --git a/gnu/services/shepherd.scm b/gnu/services/shepherd.scm
index d483ff1a151..bad089844d0 100644
--- a/gnu/services/shepherd.scm
+++ b/gnu/services/shepherd.scm
@@ -269,7 +269,11 @@ and return the resulting '.go' file."
                          (module-use! env (resolve-interface '(oop goops)))
                          (module-use! env (resolve-interface '(shepherd service)))
                          (compile-file #$file #:output-file #$output
-                                       #:env env))))))
+                                       #:env env)))
+
+                   ;; It's faster to build locally than to download.
+                   #:options '(#:local-build? #t
+                               #:substitutable? #f))))
 
 (define (shepherd-configuration-file services)
   "Return the shepherd configuration file for SERVICES."
diff --git a/gnu/services/xorg.scm b/gnu/services/xorg.scm
index a6dbec6957a..e6f64b30c11 100644
--- a/gnu/services/xorg.scm
+++ b/gnu/services/xorg.scm
@@ -798,6 +798,7 @@ the GNOME desktop environment.")
         (user-account
          (name "gdm")
          (group "gdm")
+         (supplementary-groups '("video"))
          (system? #t)
          (comment "GNOME Display Manager user")
          (home-directory "/var/lib/gdm")
diff --git a/gnu/system/vm.scm b/gnu/system/vm.scm
index d1c131ecb41..c6ec25a8958 100644
--- a/gnu/system/vm.scm
+++ b/gnu/system/vm.scm
@@ -186,12 +186,15 @@ made available under the /xchg CIFS share."
     ;; the initrd.  See example at
     ;; <https://lists.gnu.org/archive/html/guix-devel/2017-10/msg00233.html>.
     (program-file "linux-vm-loader"
-                  ;; When USER-BUILDER succeeds, reboot (indicating a
-                  ;; success), otherwise die, which causes a kernel panic
-                  ;; ("Attempted to kill init!").
-                  #~(if (zero? (system* #$user-builder))
-                        (reboot)
-                        (exit 1))))
+                  ;; Communicate USER-BUILDER's exit status via /xchg so that
+                  ;; the host can distinguish between success, failure, and
+                  ;; kernel panic.
+                  #~(let ((status (system* #$user-builder)))
+                      (call-with-output-file "/xchg/.exit-status"
+                        (lambda (port)
+                          (write status port)))
+                      (sync)
+                      (reboot))))
 
   (let ((initrd (or initrd
                     (base-initrd file-systems
diff --git a/guix/build-system/gnu.scm b/guix/build-system/gnu.scm
index d6613edb330..f59567febb3 100644
--- a/guix/build-system/gnu.scm
+++ b/guix/build-system/gnu.scm
@@ -151,8 +151,8 @@ so that they use INPUTS (a thunk) instead of implicit inputs."
         p))
 
   (define (cut? p)
-    (and (eq? (package-build-system p) gnu-build-system)
-         (memq #:implicit-inputs? (package-arguments p))))
+    (or (not (eq? (package-build-system p) gnu-build-system))
+        (memq #:implicit-inputs? (package-arguments p))))
 
   (package-mapping add-explicit-inputs cut?))
 
diff --git a/guix/gexp.scm b/guix/gexp.scm
index 99390bcafc4..1f1993a89fd 100644
--- a/guix/gexp.scm
+++ b/guix/gexp.scm
@@ -683,22 +683,22 @@ When TARGET is true, use it as the cross-compilation target triplet."
     (and (string? obj) (store-path? obj)))
 
   (with-monad %store-monad
-    (mapm %store-monad
-          (match-lambda
-            (((? struct? thing) sub-drv ...)
-             (mlet %store-monad ((obj (lower-object
-                                       thing system #:target target)))
-               (return (match obj
-                         ((? derivation? drv)
-                          (let ((outputs (if (null? sub-drv)
-                                             '("out")
-                                             sub-drv)))
-                            (derivation-input drv outputs)))
-                         ((? store-item? item)
-                          item)))))
-            (((? store-item? item))
-             (return item)))
-          inputs)))
+    (mapm/accumulate-builds
+     (match-lambda
+       (((? struct? thing) sub-drv ...)
+        (mlet %store-monad ((obj (lower-object
+                                  thing system #:target target)))
+          (return (match obj
+                    ((? derivation? drv)
+                     (let ((outputs (if (null? sub-drv)
+                                        '("out")
+                                        sub-drv)))
+                       (derivation-input drv outputs)))
+                    ((? store-item? item)
+                     item)))))
+       (((? store-item? item))
+        (return item)))
+     inputs)))
 
 (define* (lower-reference-graphs graphs #:key system target)
   "Given GRAPHS, a list of (FILE-NAME INPUT ...) lists for use as a
diff --git a/guix/grafts.scm b/guix/grafts.scm
index adc7bfafaec..5173a77e58f 100644
--- a/guix/grafts.scm
+++ b/guix/grafts.scm
@@ -1,5 +1,5 @@
 ;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2014, 2015, 2016, 2017, 2018, 2019 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2014, 2015, 2016, 2017, 2018, 2019, 2020 Ludovic Courtès <ludo@gnu.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -166,22 +166,14 @@ references.  Call REFERENCES to get the list of references."
 (define (references-oracle store input)
   "Return a one-argument procedure that, when passed the output file names of
 INPUT, a derivation input, or their dependencies, returns the list of
-references of that item.  Use either local info or substitute info; build
-INPUT if no information is available."
+references of that item.  Build INPUT if it's not available."
   (define (references* items)
+    ;; Return the references of ITEMS.
     (guard (c ((store-protocol-error? c)
-               ;; As a last resort, build DRV and query the references of the
-               ;; build result.
-
-               ;; Warm up the narinfo cache, otherwise each derivation build
-               ;; will result in one HTTP request to get one narinfo, which is
-               ;; much less efficient than fetching them all upfront.
-               (substitution-oracle store
-                                    (list (derivation-input-derivation input)))
-
+               ;; ITEMS are not in store so build INPUT first.
                (and (build-derivations store (list input))
-                    (map (cut references store <>) items))))
-      (references/substitutes store items)))
+                    (map (cut references/cached store <>) items))))
+      (map (cut references/cached store <>) items)))
 
   (let loop ((items (derivation-input-output-paths input))
              (result vlist-null))
diff --git a/guix/packages.scm b/guix/packages.scm
index ef96b5692f4..567240f54e1 100644
--- a/guix/packages.scm
+++ b/guix/packages.scm
@@ -444,9 +444,9 @@ derivations."
   (let ((distro (resolve-interface '(gnu packages commencement))))
     (module-ref distro 'guile-final)))
 
-(define (guile-2.0)
-  "Return Guile 2.0."
-  ;; FIXME: This is used as a workaround for <https://bugs.gnu.org/28211> when
+(define (guile-for-grafts)
+  "Return the Guile package used to build grafting derivations."
+  ;; Guile 2.2 would not work due to <https://bugs.gnu.org/28211> when
   ;; grafting packages.
   (let ((distro (resolve-interface '(gnu packages guile))))
     (module-ref distro 'guile-2.0)))
@@ -1031,39 +1031,39 @@ information in exceptions."
                        #:key (graft? (%graft?)))
   "Compile PACKAGE into a bag for SYSTEM, possibly cross-compiled to TARGET,
 and return it."
-  (cached (=> %bag-cache)
-          package (list system target graft?)
-          ;; Bind %CURRENT-SYSTEM and %CURRENT-TARGET-SYSTEM so that thunked
-          ;; field values can refer to it.
-          (parameterize ((%current-system system)
-                         (%current-target-system target))
-            (match (if graft?
-                       (or (package-replacement package) package)
-                       package)
-              ((and self
-                    ($ <package> name version source build-system
-                                 args inputs propagated-inputs native-inputs
-                                 outputs))
-               ;; Even though we prefer to use "@" to separate the package
-               ;; name from the package version in various user-facing parts
-               ;; of Guix, checkStoreName (in nix/libstore/store-api.cc)
-               ;; prohibits the use of "@", so use "-" instead.
-               (or (make-bag build-system (string-append name "-" version)
-                             #:system system
-                             #:target target
-                             #:source source
-                             #:inputs (append (inputs self)
-                                              (propagated-inputs self))
-                             #:outputs outputs
-                             #:native-inputs (native-inputs self)
-                             #:arguments (args self))
-                   (raise (if target
-                              (condition
-                               (&package-cross-build-system-error
-                                (package package)))
-                              (condition
-                               (&package-error
-                                (package package)))))))))))
+  (let ((package (or (and graft? (package-replacement package))
+                     package)))
+    (cached (=> %bag-cache)
+            package (list system target)
+            ;; Bind %CURRENT-SYSTEM and %CURRENT-TARGET-SYSTEM so that thunked
+            ;; field values can refer to it.
+            (parameterize ((%current-system system)
+                           (%current-target-system target))
+              (match package
+                ((and self
+                      ($ <package> name version source build-system
+                                   args inputs propagated-inputs native-inputs
+                                   outputs))
+                 ;; Even though we prefer to use "@" to separate the package
+                 ;; name from the package version in various user-facing parts
+                 ;; of Guix, checkStoreName (in nix/libstore/store-api.cc)
+                 ;; prohibits the use of "@", so use "-" instead.
+                 (or (make-bag build-system (string-append name "-" version)
+                               #:system system
+                               #:target target
+                               #:source source
+                               #:inputs (append (inputs self)
+                                                (propagated-inputs self))
+                               #:outputs outputs
+                               #:native-inputs (native-inputs self)
+                               #:arguments (args self))
+                     (raise (if target
+                                (condition
+                                 (&package-cross-build-system-error
+                                  (package package)))
+                                (condition
+                                 (&package-error
+                                  (package package))))))))))))
 
 (define %graft-cache
   ;; 'eq?' cache mapping package objects to a graft corresponding to their
@@ -1271,7 +1271,7 @@ This is an internal procedure."
                   (()
                    drv)
                   (grafts
-                   (let ((guile (package-derivation store (guile-2.0)
+                   (let ((guile (package-derivation store (guile-for-grafts)
                                                     system #:graft? #f)))
                      ;; TODO: As an optimization, we can simply graft the tip
                      ;; of the derivation graph since 'graft-derivation'
@@ -1297,7 +1297,7 @@ system identifying string)."
                    (graft-derivation store drv grafts
                                      #:system system
                                      #:guile
-                                     (package-derivation store (guile-2.0)
+                                     (package-derivation store (guile-for-grafts)
                                                          system #:graft? #f))))
                 drv))))
 
diff --git a/guix/profiles.scm b/guix/profiles.scm
index 2a838d3a9a1..91508860814 100644
--- a/guix/profiles.scm
+++ b/guix/profiles.scm
@@ -280,29 +280,37 @@ file name."
   (define lookup
     (manifest-entry-lookup manifest))
 
-  (with-monad %store-monad
+  (define candidates
+    (filter-map (lambda (entry)
+                  (let ((other (lookup (manifest-entry-name entry)
+                                       (manifest-entry-output entry))))
+                    (and other (list entry other))))
+                (manifest-transitive-entries manifest)))
+
+  (define lower-pair
+    (match-lambda
+      ((first second)
+       (mlet %store-monad ((first  (lower-manifest-entry first system
+                                                         #:target target))
+                           (second (lower-manifest-entry second system
+                                                         #:target target)))
+         (return (list first second))))))
+
+  ;; Start by lowering CANDIDATES "in parallel".
+  (mlet %store-monad ((lst (mapm/accumulate-builds lower-pair candidates)))
     (foldm %store-monad
-           (lambda (entry result)
-             (match (lookup (manifest-entry-name entry)
-                            (manifest-entry-output entry))
-               ((? manifest-entry? second)        ;potential conflict
-                (mlet %store-monad ((first (lower-manifest-entry entry system
-                                                                 #:target
-                                                                 target))
-                                    (second (lower-manifest-entry second system
-                                                                  #:target
-                                                                  target)))
-                  (if (string=? (manifest-entry-item first)
-                                (manifest-entry-item second))
-                      (return result)
-                      (raise (condition
-                              (&profile-collision-error
-                               (entry first)
-                               (conflict second)))))))
-               (#f                                ;no conflict
-                (return result))))
+           (lambda (entries result)
+             (match entries
+               ((first second)
+                (if (string=? (manifest-entry-item first)
+                              (manifest-entry-item second))
+                    (return result)
+                    (raise (condition
+                            (&profile-collision-error
+                             (entry first)
+                             (conflict second))))))))
            #t
-           (manifest-transitive-entries manifest))))
+           lst)))
 
 (define* (package->manifest-entry package #:optional (output "out")
                                   #:key (parent (delay #f))
@@ -1523,10 +1531,9 @@ are cross-built for TARGET."
                                                          #:target target)))
                        (extras (if (null? (manifest-entries manifest))
                                    (return '())
-                                   (mapm %store-monad
-                                         (lambda (hook)
-                                           (hook manifest))
-                                         hooks))))
+                                   (mapm/accumulate-builds (lambda (hook)
+                                                             (hook manifest))
+                                                           hooks))))
     (define inputs
       (append (filter-map (lambda (drv)
                             (and (derivation? drv)
diff --git a/guix/scripts/archive.scm b/guix/scripts/archive.scm
index 80f3b704d77..41a2a42c210 100644
--- a/guix/scripts/archive.scm
+++ b/guix/scripts/archive.scm
@@ -183,7 +183,7 @@ Export/import one or more packages from/to the store.\n"))
                                  (alist-delete 'verbosity result)))))
          (option '(#\n "dry-run") #f #f
                  (lambda (opt name arg result)
-                   (alist-cons 'dry-run? #t (alist-cons 'graft? #f result))))
+                   (alist-cons 'dry-run? #t result)))
 
          %standard-build-options))
 
diff --git a/guix/scripts/build.scm b/guix/scripts/build.scm
index af18d8b6f9c..79bd84a1a03 100644
--- a/guix/scripts/build.scm
+++ b/guix/scripts/build.scm
@@ -778,7 +778,7 @@ must be one of 'package', 'all', or 'transitive'~%")
                    (alist-cons 'manifest arg result)))
          (option '(#\n "dry-run") #f #f
                  (lambda (opt name arg result)
-                   (alist-cons 'dry-run? #t (alist-cons 'graft? #f result))))
+                   (alist-cons 'dry-run? #t result)))
          (option '(#\r "root") #t #f
                  (lambda (opt name arg result)
                    (alist-cons 'gc-root arg result)))
@@ -920,8 +920,10 @@ build."
   (with-unbound-variable-handling
    (parameterize ((%graft? graft?))
      (append-map (lambda (system)
-                   (append-map (cut compute-derivation <> system)
-                               things-to-build))
+                   (concatenate
+                    (map/accumulate-builds store
+                                           (cut compute-derivation <> system)
+                                           things-to-build)))
                  systems))))
 
 (define (show-build-log store file urls)
diff --git a/guix/scripts/copy.scm b/guix/scripts/copy.scm
index 2fa31ecf45e..f6f64d0a118 100644
--- a/guix/scripts/copy.scm
+++ b/guix/scripts/copy.scm
@@ -135,7 +135,7 @@ Copy ITEMS to or from the specified host over SSH.\n"))
                                  (alist-delete 'verbosity result)))))
          (option '(#\n "dry-run") #f #f
                  (lambda (opt name arg result)
-                   (alist-cons 'dry-run? #t (alist-cons 'graft? #f result))))
+                   (alist-cons 'dry-run? #t result)))
 
          (option '(#\h "help") #f #f
                  (lambda args
diff --git a/guix/scripts/deploy.scm b/guix/scripts/deploy.scm
index f70d41f35c8..4466a0c6324 100644
--- a/guix/scripts/deploy.scm
+++ b/guix/scripts/deploy.scm
@@ -30,6 +30,7 @@
   #:use-module (guix status)
   #:use-module (ice-9 format)
   #:use-module (srfi srfi-1)
+  #:use-module (srfi srfi-26)
   #:use-module (srfi srfi-34)
   #:use-module (srfi srfi-35)
   #:use-module (srfi srfi-37)
@@ -102,7 +103,7 @@ Perform the deployment specified by FILE.\n"))
   "Show the list of machines to deploy, MACHINES."
   (let ((count (length machines)))
     (format (current-error-port)
-            (N_ "The following ~*machine will be deployed:~%"
+            (N_ "The following ~d machine will be deployed:~%"
                 "The following ~d machines will be deployed:~%"
                 count)
             count)
@@ -114,6 +115,27 @@ Perform the deployment specified by FILE.\n"))
              (current-error-port))
     (display "\n\n" (current-error-port))))
 
+(define (deploy-machine* store machine)
+  "Deploy MACHINE, taking care of error handling."
+  (info (G_ "deploying to ~a...~%")
+        (machine-display-name machine))
+
+  (guard (c ((message-condition? c)
+             (report-error (G_ "failed to deploy ~a: ~a~%")
+                           (machine-display-name machine)
+                           (condition-message c)))
+            ((deploy-error? c)
+             (when (deploy-error-should-roll-back c)
+               (info (G_ "rolling back ~a...~%")
+                     (machine-display-name machine))
+               (run-with-store store (roll-back-machine machine)))
+             (apply throw (deploy-error-captured-args c))))
+    (run-with-store store (deploy-machine machine))
+
+    (info (G_ "successfully deployed ~a~%")
+          (machine-display-name machine))))
+
+
 (define (guix-deploy . args)
   (define (handle-argument arg result)
     (alist-cons 'file arg result))
@@ -129,21 +151,7 @@ Perform the deployment specified by FILE.\n"))
         (set-build-options-from-command-line store opts)
         (with-build-handler (build-notifier #:use-substitutes?
                                             (assoc-ref opts 'substitutes?))
-          (for-each (lambda (machine)
-                      (info (G_ "deploying to ~a...~%")
-                            (machine-display-name machine))
-                      (parameterize ((%graft? (assq-ref opts 'graft?)))
-                        (guard (c ((message-condition? c)
-                                   (report-error (G_ "failed to deploy ~a: ~a~%")
-                                                 (machine-display-name machine)
-                                                 (condition-message c)))
-                                  ((deploy-error? c)
-                                   (when (deploy-error-should-roll-back c)
-                                     (info (G_ "rolling back ~a...~%")
-                                           (machine-display-name machine))
-                                     (run-with-store store (roll-back-machine machine)))
-                                   (apply throw (deploy-error-captured-args c))))
-                          (run-with-store store (deploy-machine machine))
-                          (info (G_ "successfully deployed ~a~%")
-                                (machine-display-name machine)))))
-                    machines))))))
+          (parameterize ((%graft? (assq-ref opts 'graft?)))
+            (map/accumulate-builds store
+                                   (cut deploy-machine* store <>)
+                                   machines)))))))
diff --git a/guix/scripts/environment.scm b/guix/scripts/environment.scm
index e6f45d3eba9..03f455ab7b8 100644
--- a/guix/scripts/environment.scm
+++ b/guix/scripts/environment.scm
@@ -254,7 +254,7 @@ use '--preserve' instead~%"))
                    (alist-cons 'ad-hoc? #t result)))
          (option '(#\n "dry-run") #f #f
                  (lambda (opt name arg result)
-                   (alist-cons 'dry-run? #t (alist-cons 'graft? #f result))))
+                   (alist-cons 'dry-run? #t result)))
          (option '(#\s "system") #t #f
                  (lambda (opt name arg result)
                    (alist-cons 'system arg
diff --git a/guix/scripts/pack.scm b/guix/scripts/pack.scm
index 9d981c05d68..a4b38735a79 100644
--- a/guix/scripts/pack.scm
+++ b/guix/scripts/pack.scm
@@ -823,7 +823,7 @@ last resort for relocation."
 
          (option '(#\n "dry-run") #f #f
                  (lambda (opt name arg result)
-                   (alist-cons 'dry-run? #t (alist-cons 'graft? #f result))))
+                   (alist-cons 'dry-run? #t result)))
          (option '(#\d "derivation") #f #f
                  (lambda (opt name arg result)
                    (alist-cons 'derivation-only? #t result)))
diff --git a/guix/scripts/package.scm b/guix/scripts/package.scm
index 8af0a7a27e6..304084796a2 100644
--- a/guix/scripts/package.scm
+++ b/guix/scripts/package.scm
@@ -487,8 +487,7 @@ kind of search path~%")
                            #f)))
          (option '(#\n "dry-run") #f #f
                  (lambda (opt name arg result arg-handler)
-                   (values (alist-cons 'dry-run? #t
-                                       (alist-cons 'graft? #f result))
+                   (values (alist-cons 'dry-run? #t result)
                            #f)))
          (option '(#\v "verbosity") #t #f
                  (lambda (opt name arg result arg-handler)
diff --git a/guix/scripts/pull.scm b/guix/scripts/pull.scm
index dbd02431fe2..dfe7ee7ad51 100644
--- a/guix/scripts/pull.scm
+++ b/guix/scripts/pull.scm
@@ -168,7 +168,7 @@ Download and deploy the latest version of Guix.\n"))
                                (alist-delete 'system result eq?))))
          (option '(#\n "dry-run") #f #f
                  (lambda (opt name arg result)
-                   (alist-cons 'dry-run? #t (alist-cons 'graft? #f result))))
+                   (alist-cons 'dry-run? #t result)))
          (option '(#\v "verbosity") #t #f
                  (lambda (opt name arg result)
                    (let ((level (string->number* arg)))
diff --git a/guix/scripts/system.scm b/guix/scripts/system.scm
index 61a3c95dbd8..a178761203c 100644
--- a/guix/scripts/system.scm
+++ b/guix/scripts/system.scm
@@ -1041,7 +1041,7 @@ Some ACTIONS support additional ARGS.\n"))
 
          (option '(#\n "dry-run") #f #f
                  (lambda (opt name arg result)
-                   (alist-cons 'dry-run? #t (alist-cons 'graft? #f result))))
+                   (alist-cons 'dry-run? #t result)))
          (option '(#\v "verbosity") #t #f
                  (lambda (opt name arg result)
                    (let ((level (string->number* arg)))
diff --git a/guix/store.scm b/guix/store.scm
index 5dea264811e..12f66d0e713 100644
--- a/guix/store.scm
+++ b/guix/store.scm
@@ -106,6 +106,8 @@
             file-mapping->tree
             binary-file
             with-build-handler
+            map/accumulate-builds
+            mapm/accumulate-builds
             build-things
             build
             query-failed-paths
@@ -134,6 +136,7 @@
 
             built-in-builders
             references
+            references/cached
             references/substitutes
             references*
             query-path-info*
@@ -1303,6 +1306,48 @@ deals with \"dynamic dependencies\" such as grafts---derivations that depend
 on the build output of a previous derivation."
   (call-with-build-handler handler (lambda () exp ...)))
 
+;; Unresolved dynamic dependency.
+(define-record-type <unresolved>
+  (unresolved things continuation)
+  unresolved?
+  (things       unresolved-things)
+  (continuation unresolved-continuation))
+
+(define (build-accumulator continue store things mode)
+  "This build handler accumulates THINGS and returns an <unresolved> object."
+  (if (= mode (build-mode normal))
+      (unresolved things continue)
+      (continue #t)))
+
+(define (map/accumulate-builds store proc lst)
+  "Apply PROC over each element of LST, accumulating 'build-things' calls and
+coalescing them into a single call."
+  (define result
+    (map (lambda (obj)
+           (with-build-handler build-accumulator
+             (proc obj)))
+         lst))
+
+  (match (append-map (lambda (obj)
+                       (if (unresolved? obj)
+                           (unresolved-things obj)
+                           '()))
+                     result)
+    (()
+     result)
+    (to-build
+     ;; We've accumulated things TO-BUILD.  Actually build them and resume the
+     ;; corresponding continuations.
+     (build-things store (delete-duplicates to-build))
+     (map/accumulate-builds store
+                            (lambda (obj)
+                              (if (unresolved? obj)
+                                  ;; Pass #f because 'build-things' is now
+                                  ;; unnecessary.
+                                  ((unresolved-continuation obj) #f)
+                                  obj))
+                            result))))
+
 (define build-things
   (let ((build (operation (build-things (string-list things)
                                         (integer mode))
@@ -1389,6 +1434,13 @@ error if there is no such root."
   ;; would use a cache associated with the daemon connection instead (XXX).
   (make-hash-table 100))
 
+(define (references/cached store item)
+  "Like 'references', but cache results."
+  (or (hash-ref %reference-cache item)
+      (let ((references (references store item)))
+        (hash-set! %reference-cache item references)
+        references)))
+
 (define (references/substitutes store items)
   "Return the list of list of references of ITEMS; the result has the same
 length as ITEMS.  Query substitute information for any item missing from the
@@ -1829,6 +1881,18 @@ taking the store as its first argument."
                           (lambda (store . args)
                             (run-with-store store (apply proc args)))))
 
+(define (mapm/accumulate-builds mproc lst)
+  "Like 'mapm' in %STORE-MONAD, but accumulate 'build-things' calls and
+coalesce them into a single call."
+  (lambda (store)
+    (values (map/accumulate-builds store
+                                   (lambda (obj)
+                                     (run-with-store store
+                                       (mproc obj)))
+                                   lst)
+            store)))
+
+
 ;;
 ;; Store monad operators.
 ;;
diff --git a/tests/store.scm b/tests/store.scm
index b61a981b28e..0458a347465 100644
--- a/tests/store.scm
+++ b/tests/store.scm
@@ -412,6 +412,42 @@
       (build-derivations %store (list d2))
       'fail)))
 
+(test-assert "map/accumulate-builds"
+  (let* ((b  (add-text-to-store %store "build" "echo $foo > $out" '()))
+         (s  (add-to-store %store "bash" #t "sha256"
+                           (search-bootstrap-binary "bash"
+                                                    (%current-system))))
+         (d1 (derivation %store "the-thing"
+                         s `("-e" ,b)
+                         #:env-vars `(("foo" . ,(random-text)))
+                         #:sources (list b s)))
+         (d2 (derivation %store "the-thing"
+                         s `("-e" ,b)
+                         #:env-vars `(("foo" . ,(random-text))
+                                      ("bar" . "baz"))
+                         #:sources (list b s))))
+    (with-build-handler (lambda (continue store things mode)
+                          (equal? (map derivation-file-name (list d1 d2))
+                                  things))
+      (map/accumulate-builds %store
+                             (lambda (drv)
+                               (build-derivations %store (list drv))
+                               (add-to-store %store "content-addressed"
+                                             #t "sha256"
+                                             (derivation->output-path drv)))
+                             (list d1 d2)))))
+
+(test-assert "mapm/accumulate-builds"
+  (let* ((d1 (run-with-store %store
+               (gexp->derivation "foo" #~(mkdir #$output))))
+         (d2 (run-with-store %store
+               (gexp->derivation "bar" #~(mkdir #$output)))))
+    (with-build-handler (lambda (continue store things mode)
+                          (equal? (map derivation-file-name (pk 'zz (list d1 d2)))
+                                  (pk 'XX things)))
+      (run-with-store %store
+        (mapm/accumulate-builds built-derivations `((,d1) (,d2)))))))
+
 (test-assert "topologically-sorted, one item"
   (let* ((a (add-text-to-store %store "a" "a"))
          (b (add-text-to-store %store "b" "b" (list a)))