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guix: warn SOURCE_DATE_EPOCH set in guix-codesign

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Currently there is a warning for this in guix-build, but we also need
one in guix-codesign, otherwise the codesigned hashes are not
reproducible.

Move common functionality into prelude and call the function in both
guix actions.

Github-Pull: #33073
Rebased-From: 1bed0f734b3f2dd876193b5cad303bfab1d250d5
This commit is contained in:
will 2025-07-27 21:51:39 +01:00 • committed by fanquake
parent 9437415024
commit a18b53f99e
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3 changed files with 27 additions and 13 deletions
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14
contrib/guix/guix-build
View file

@ -73,19 +73,7 @@ mkdir -p "$VERSION_BASE"
# SOURCE_DATE_EPOCH should not unintentionally be set
################
if [ -n "$SOURCE_DATE_EPOCH" ] && [ -z "$FORCE_SOURCE_DATE_EPOCH" ]; then
cat << EOF
ERR: Environment variable SOURCE_DATE_EPOCH is set which may break reproducibility.
Aborting...
Hint: You may want to:
1. Unset this variable: \`unset SOURCE_DATE_EPOCH\` before rebuilding
2. Set the 'FORCE_SOURCE_DATE_EPOCH' environment variable if you insist on
using your own epoch
EOF
exit 1
fi
check_source_date_epoch
################
# Build directories should not exist

6
contrib/guix/guix-codesign
View file

@ -67,6 +67,12 @@ EOF
exit 1
fi
################
# SOURCE_DATE_EPOCH should not unintentionally be set
################
check_source_date_epoch
################
# The codesignature git worktree should not be dirty
################

20
contrib/guix/libexec/prelude.bash
View file

@ -21,6 +21,26 @@ check_tools() {
done
}
################
# SOURCE_DATE_EPOCH should not unintentionally be set
################
check_source_date_epoch() {
if [ -n "$SOURCE_DATE_EPOCH" ] && [ -z "$FORCE_SOURCE_DATE_EPOCH" ]; then
cat << EOF
ERR: Environment variable SOURCE_DATE_EPOCH is set which may break reproducibility.
Aborting...
Hint: You may want to:
1. Unset this variable: \`unset SOURCE_DATE_EPOCH\` before rebuilding
2. Set the 'FORCE_SOURCE_DATE_EPOCH' environment variable if you insist on
using your own epoch
EOF
exit 1
fi
}
check_tools cat env readlink dirname basename git
################