gnu: packages: Remove python-build-system comments.

Rephrase or remove comments completely mentioning python-build-system to
prepare it for depreciation. It helps to search code for the rest
relevant entries of python-build-system.

Change-Id: I98ee81b4b0e0f826fd236fec20e77546e1567f80

9 files changed, 21 insertions, 32 deletions

diff --git a/gnu/packages/build-tools.scm b/gnu/packages/build-tools.scm
index a4e38e58698..5b924de56a5 100644
--- a/gnu/packages/build-tools.scm
+++ b/gnu/packages/build-tools.scm
@@ -432,9 +432,8 @@ files and generates build instructions for the Ninja build system.")
     (arguments
      (list
       #:tests? #f                       ;disabled to avoid extra dependencies
-      ;; Essentially a lighter copy of the former python-build-system.
-      ;; Using it rather than pyproject-build-system allows to edit the latter
-      ;; without a C++ world rebuild.
+      ;; Custom build steps to prevent using pyproject-build-system which
+      ;; allows to edit the latter without a C++ world rebuild.
       #:phases
       #~(modify-phases %standard-phases
           (delete 'bootstrap)
diff --git a/gnu/packages/documentation.scm b/gnu/packages/documentation.scm
index be0342b61f3..118c98af938 100644
--- a/gnu/packages/documentation.scm
+++ b/gnu/packages/documentation.scm
@@ -490,9 +490,8 @@ inspired by Dash.")
     (build-system gnu-build-system)
     (arguments
      (list
-      ;; Essentially a lighter copy of the former python-build-system.
-      ;; Using it rather than pyproject-build-system allows to edit the latter
-      ;; without a texlive + haskell world rebuild.
+      ;; Custom build steps to prevent using pyproject-build-system which
+      ;; allows to edit the latter without a texlive + haskell world rebuild.
       #:phases
       #~(modify-phases %standard-phases
           (delete 'bootstrap)
diff --git a/gnu/packages/mail.scm b/gnu/packages/mail.scm
index f9afc6e5d54..1a1369fc3c2 100644
--- a/gnu/packages/mail.scm
+++ b/gnu/packages/mail.scm
@@ -1736,8 +1736,6 @@ and search library.")
           ;; tree, so chdir into it before building.
           (add-after 'unpack 'enter-python-dir
             (lambda _ (chdir "bindings/python-cffi")))
-          ;; python-build-system does not invoke the configure script
-          ;; so _notmuch_config.py is missing
           (add-after 'enter-python-dir 'create-notmuch-config
             (lambda* (#:key inputs #:allow-other-keys)
               (with-output-to-file "_notmuch_config.py"
diff --git a/gnu/packages/mpd.scm b/gnu/packages/mpd.scm
index cdae880366d..6c8fc1adbf2 100644
--- a/gnu/packages/mpd.scm
+++ b/gnu/packages/mpd.scm
@@ -503,7 +503,6 @@ other MPD frontends.")
                (base32
                 "17ys8ccr3h6vix0agvhz859slz0phhk7lwqn5bg4az8s7zgqm3nm"))))
     (build-system gnu-build-system)
-    ;; Manually wrap the binary, because we’re not using python-build-system.
     (arguments
      (list
       #:phases
diff --git a/gnu/packages/python-build.scm b/gnu/packages/python-build.scm
index 8a699b3db00..72e9645e732 100644
--- a/gnu/packages/python-build.scm
+++ b/gnu/packages/python-build.scm
@@ -834,9 +834,9 @@ facilitate packaging Python projects, where packaging includes:
     (arguments
      (list
       #:tests? #f                       ;disabled to avoid extra dependencies
-      ;; Essentially a lighter copy of the former python-build-system.
-      ;; Using it rather than pyproject-build-system allows to edit the latter
-      ;; without a world rebuild (for the meson package in particular).
+      ;; Custom build steps to prevent using pyproject-build-system which
+      ;; allows to edit the latter without a world rebuild (for the meson
+      ;; package in particular).
       #:phases
       #~(modify-phases %standard-phases
           (delete 'bootstrap)
diff --git a/gnu/packages/python-xyz.scm b/gnu/packages/python-xyz.scm
index 64a01f98a41..27010f69c33 100644
--- a/gnu/packages/python-xyz.scm
+++ b/gnu/packages/python-xyz.scm
@@ -5961,7 +5961,6 @@ Unicode-to-LaTeX conversion.")
        (sha256
         (base32
          "03gyss1rhj4in7pgysg4q0hxp3230whinlpy1532ljs99lrx0ywx"))))
-    ;(build-system python-build-system)
     (arguments
      '(#:phases
        (modify-phases %standard-phases
diff --git a/gnu/packages/selinux.scm b/gnu/packages/selinux.scm
index 071b295e563..c33be69e9e9 100644
--- a/gnu/packages/selinux.scm
+++ b/gnu/packages/selinux.scm
@@ -271,7 +271,6 @@ binary policies.")
             (add-after 'enter-dir 'fix-target-path
               (lambda* (#:key inputs #:allow-other-keys)
                 (let ((get-python-version
-                       ;; FIXME: copied from python-build-system
                        (lambda (python)
                          (let* ((version     (last (string-split python #\-)))
                                 (components  (string-split version #\.))
diff --git a/gnu/packages/virtualization.scm b/gnu/packages/virtualization.scm
index 49a7b24fa44..90378b1b2e7 100644
--- a/gnu/packages/virtualization.scm
+++ b/gnu/packages/virtualization.scm
@@ -1033,21 +1033,18 @@ firmware blobs.  You can
                                        ;; absolute file name, which is why we
                                        ;; run everything through 'basename'.
                                       (match (string-split line #\ )
-                                        ((commands ... prog)
-                                         (cons (basename prog) progs))))
-                                (loop (read-line port) progs)))))))))))
-         ;; Wrap all executables with GUIX_PYTHONPATH.  We can't borrow
-         ;; the phase from python-build-system because we also need to wrap
-         ;; the scripts in $out/lib/ganeti such as "node-daemon-setup".
-         (add-after 'install 'wrap
-           (lambda* (#:key inputs outputs #:allow-other-keys)
-             (let* ((out (assoc-ref outputs "out"))
-                    (sbin (string-append out "/sbin"))
-                    (lib (string-append out "/lib"))
-                    (PYTHONPATH (string-append (site-packages inputs outputs)
-                                               ":" (getenv "GUIX_PYTHONPATH"))))
-               (define (shell-script? file)
-                 (call-with-ascii-input-file file
+                                         ((commands ... prog)
+                                          (cons (basename prog) progs))))
+                                 (loop (read-line port) progs)))))))))))
+          (add-after 'install 'wrap
+            (lambda* (#:key inputs outputs #:allow-other-keys)
+              (let* ((out (assoc-ref outputs "out"))
+                     (sbin (string-append out "/sbin"))
+                     (lib (string-append out "/lib"))
+                     (PYTHONPATH (string-append (site-packages inputs outputs)
+                                                ":" (getenv "GUIX_PYTHONPATH"))))
+                (define (shell-script? file)
+                  (call-with-ascii-input-file file
                    (lambda (port)
                      (let ((shebang (false-if-exception (read-line port))))
                        (and shebang
diff --git a/gnu/packages/xml.scm b/gnu/packages/xml.scm
index 6a9f76fd2c9..c0935f7cea6 100644
--- a/gnu/packages/xml.scm
+++ b/gnu/packages/xml.scm
@@ -1998,9 +1998,8 @@ libxml2 and libxslt.")
     (build-system gnu-build-system)
     (arguments
      (list
-      ;; Essentially a lighter copy of the former python-build-system.
-      ;; Using it rather than pyproject-build-system allows to edit the latter
-      ;; without a texlive + haskell world rebuild.
+      ;; Custom build steps to prevent using pyproject-build-system which
+      ;; allows to edit the latter without a texlive + haskell world rebuild.
       #:test-target "test"
       #:phases
       #~(modify-phases %standard-phases