Revert "build: Add a commit-msg hook that embeds Change-Id in commit messages."

This reverts commit 8005e09b261d65bf0f7469cd8e89423c1c1db820 and follow-ups.
This was added 2 years ago to be able to trace commits between the git
repository and the guix-patches tracker, and to implement a solution to
automatically close merged commits (which has not materialized).

Since we have now migrated to Codeberg, the cross-referencing between reviewed
commits (pull requests) and the actual commits merged can be done in the
Codeberg UI (via the 'manually merged' option), and Codeberg also supports
closing a bug via the "Fixes: #NNN" git trailer, and as a convention we can
add a "Merges: !NNN" git trailer in a commit closing a PR (the actual closing
is not yet implemented by Forgejo), which mostly obsoletes the purpose of the
Change-Id git trailer.

1 files changed, 1 insertions, 13 deletions

diff --git a/Makefile.am b/Makefile.am
index d349fcaa383..416c958b202 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -20,7 +20,6 @@
 # Copyright © 2023 Clément Lassieur <clement@lassieur.org>
 # Copyright © 2023, 2024 Wilko Meyer <w@wmeyer.eu>
 # Copyright © 2024 gemmaro <gemmaro.dev@gmail.com>
-# Copyright © 2025 Brice Waegeneire <brice@waegenei.re>
 # Copyright © 2025 Florian Pelz <pelzflorian@pelzflorian.de>
 #
 # This file is part of GNU Guix.
@@ -1295,16 +1294,6 @@ $(GIT_CONFIG_FILE): etc/git/gitconfig
             ../etc/git/gitconfig ../etc/git/gitconfig; \
         fi
 
-COMMIT_MSG_MAGIC = VGhpcyBpcyB0aGUgY29tbWl0LW1zZyBob29rIG9mIEd1aXg=
-$(GIT_HOOKS_DIR)/commit-msg: etc/git/commit-msg | $(GIT_HOOKS_DIR)
-        if [ -n "$(GIT_HOOKS_DIR)" ]; then \
-          if test -f $@  && ! grep -qF $(COMMIT_MSG_MAGIC) $@; then \
-            mkdir -p $@.d && mv $@ $@.d && \
-            echo user commit-msg hook moved to $@.d/commit-msg; \
-          fi && \
-          cp etc/git/commit-msg $@; \
-        fi
-
 # Convenience targets.
 GIT_HOOKS_SOURCE_FILES := $(shell find etc/git -type f -executable)
 .PHONY: git-config git-hooks invalidate-hooks
@@ -1317,8 +1306,7 @@ git-config: $(GIT_CONFIG_FILE) git-hooks
 nodist_noinst_DATA =                            \
   $(GIT_HOOKS_DIR)/pre-push                     \
   $(GIT_HOOKS_DIR)/post-merge                   \
-  $(GIT_CONFIG_FILE)                            \
-  $(GIT_HOOKS_DIR)/commit-msg
+  $(GIT_CONFIG_FILE)
 endif
 
 # Downloading up-to-date PO files.