databases: Add redox.

* guix-science/packages/databases.scm: New file.
(redox): New variable.
* patches/redox-generate-pkg-config-file.patch: New file.
* patches/redox-install-pkg-config-file.patch: New file.

3 files changed, 134 insertions, 0 deletions

diff --git a/guix-science/packages/databases.scm b/guix-science/packages/databases.scm
new file mode 100644
index 0000000..41d4191
--- /dev/null
+++ b/guix-science/packages/databases.scm
@@ -0,0 +1,51 @@
+;;; SPDX-License-Identifier: GPL-3.0-or-later
+
+(define-module (guix-science packages databases)
+  #:use-module ((guix licenses)
+                #:prefix license:)
+  #:use-module (guix gexp)
+  #:use-module (guix utils)
+  #:use-module (guix packages)
+  #:use-module (guix git-download)
+  #:use-module (guix build-system cmake)
+  #:use-module (gnu packages)
+  #:use-module (gnu packages databases)
+  #:use-module (gnu packages libevent))
+
+(define-public redox
+  ;; No tagged releases, latest commit as of 2026-01-16, version
+  ;; number according to HISTORY.md.
+  (let ((version "0.3")
+        (commit "b5b9fa31a6fba3f7ce872e623958cb27b7686039")
+        (revision "1"))
+    (package
+      (name "redox")
+      (version (git-version version revision commit))
+      (home-page "https://github.com/hmartino/redox.git")
+      (source
+       (origin
+         (method git-fetch)
+         (uri (git-reference
+               (url home-page)
+               (commit commit)))
+         (file-name (git-file-name name version))
+         (sha256
+          (base32 "00a0l8yg5m27q5s1f331dwm1dri1c5giblk5afhpxa6p8ir4397n"))
+         (patches
+          (search-patches "patches/redox-install-pkg-config-file.patch"
+                          "patches/redox-generate-pkg-config-file.patch"))))
+      (build-system cmake-build-system)
+      (arguments
+       ;; Tests require a connection to a redis database.
+       (list #:tests? #f))
+      ;; redox exposes libev.h
+      (propagated-inputs (list libev))
+      (inputs (list hiredis))
+      (synopsis "Modern, asynchronous, and fast C++11 client for Redis")
+      (description
+       "Redox is a C++ interface to the Redis key-value store that makes it
+easy to write applications that are both elegant and high-performance.
+Communication should be a means to an end, not something we spend a
+lot of time worrying about.  Redox takes care of the details so you can
+move on to the interesting part of your project.")
+      (license license:asl2.0))))
diff --git a/patches/redox-generate-pkg-config-file.patch b/patches/redox-generate-pkg-config-file.patch
new file mode 100644
index 0000000..efd488b
--- /dev/null
+++ b/patches/redox-generate-pkg-config-file.patch
@@ -0,0 +1,41 @@
+From e7904da79d5360ba22fbab64b96be167b6dda5f6 Mon Sep 17 00:00:00 2001
+From: Millian Poquet <millian.poquet@inria.fr>
+Date: Fri, 7 Dec 2018 00:33:43 +0100
+Subject: [PATCH] fix generated pkg-config file
+
+---
+ CMakeLists.txt    | 4 +++-
+ cmake/redox.pc.in | 4 ++--
+ 2 files changed, 5 insertions(+), 3 deletions(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 54dfa35..3f0fa52 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -1,4 +1,4 @@
+-cmake_minimum_required(VERSION 2.8.4)
++cmake_minimum_required(VERSION 3.0.2)
+ project(redox)
+ 
+ set(REDOX_VERSION_MAJOR 0)
+@@ -194,6 +194,8 @@ if (lib)
+   # Install the dynamic library to /usr/lib[64]
+   install(TARGETS redox DESTINATION lib${LIB_SUFFIX})
+   # Generate the redox.pc pkg-config file in /usr/lib[64]/pkgconfig
++  get_filename_component(HIREDIS_LIBRARY_DIRECTORY ${HIREDIS_LIBRARIES} DIRECTORY)
++  get_filename_component(LIBEV_LIBRARY_DIRECTORY ${LIBEV_LIBRARIES} DIRECTORY)
+   configure_file("${CMAKE_HOME_DIRECTORY}/cmake/redox.pc.in" "${PROJECT_BINARY_DIR}/redox.pc" @ONLY)
+   install(FILES "${PROJECT_BINARY_DIR}/redox.pc" DESTINATION lib${LIB_SUFFIX}/pkgconfig/)
+ endif()
+diff --git a/cmake/redox.pc.in b/cmake/redox.pc.in
+index a480d1f..1574542 100644
+--- a/cmake/redox.pc.in
++++ b/cmake/redox.pc.in
+@@ -7,5 +7,5 @@ Name: redox
+ Description: Modern, asynchronous, and wicked fast C++11 client for Redis
+ Version: @REDOX_VERSION_STRING@
+ 
+-Libs: -L${libdir} -lredox @HIREDIS_LIBRARIES@ @LIBEV_LIBRARIES@ @CMAKE_THREAD_LIBS_INIT@
+-Cflags: -I${includedir}
++Libs: -L${libdir} -lredox -L@HIREDIS_LIBRARY_DIRECTORY@ -lhiredis -L@LIBEV_LIBRARY_DIRECTORY@ -lev @CMAKE_THREAD_LIBS_INIT@
++Cflags: -I${includedir} -I@HIREDIS_INCLUDE_DIRS@
diff --git a/patches/redox-install-pkg-config-file.patch b/patches/redox-install-pkg-config-file.patch
new file mode 100644
index 0000000..a1390b3
--- /dev/null
+++ b/patches/redox-install-pkg-config-file.patch
@@ -0,0 +1,42 @@
+From 6728a7582bbd5f0ef37f8893cc0103f82c9fdc05 Mon Sep 17 00:00:00 2001
+From: Millian Poquet <millian.poquet@inria.fr>
+Date: Thu, 6 Dec 2018 20:01:15 +0100
+Subject: [PATCH] install a pkg-config redox.pc file
+
+---
+ CMakeLists.txt    |  3 +++
+ cmake/redox.pc.in | 11 +++++++++++
+ 2 files changed, 14 insertions(+)
+ create mode 100644 cmake/redox.pc.in
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 11887ad..54dfa35 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -193,6 +193,9 @@ endif()
+ if (lib)
+   # Install the dynamic library to /usr/lib[64]
+   install(TARGETS redox DESTINATION lib${LIB_SUFFIX})
++  # Generate the redox.pc pkg-config file in /usr/lib[64]/pkgconfig
++  configure_file("${CMAKE_HOME_DIRECTORY}/cmake/redox.pc.in" "${PROJECT_BINARY_DIR}/redox.pc" @ONLY)
++  install(FILES "${PROJECT_BINARY_DIR}/redox.pc" DESTINATION lib${LIB_SUFFIX}/pkgconfig/)
+ endif()
+ 
+ if (static_lib)
+diff --git a/cmake/redox.pc.in b/cmake/redox.pc.in
+new file mode 100644
+index 0000000..a480d1f
+--- /dev/null
++++ b/cmake/redox.pc.in
+@@ -0,0 +1,11 @@
++prefix=@CMAKE_INSTALL_PREFIX@
++exec_prefix=${prefix}
++libdir=${prefix}/lib@LIB_SUFFIX@
++includedir=${prefix}/include
++
++Name: redox
++Description: Modern, asynchronous, and wicked fast C++11 client for Redis
++Version: @REDOX_VERSION_STRING@
++
++Libs: -L${libdir} -lredox @HIREDIS_LIBRARIES@ @LIBEV_LIBRARIES@ @CMAKE_THREAD_LIBS_INIT@
++Cflags: -I${includedir}