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use --dry-run check to re-apply system patches

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Daiderd Jordan 2020-12-19 11:37:54 +01:00 • committed by Daiderd Jordan
parent 7e4b134554
commit 3cf11923eb
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1 changed files with 10 additions and 6 deletions
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16
modules/system/patches.nix
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@ -29,6 +29,10 @@ in
description = '' description = ''
Set of patches to apply to <filename>/</filename>. Set of patches to apply to <filename>/</filename>.
<warning>
<para>This can modify everything so use with caution.</para>
</warning>
Useful for safely changing system files. Unlike the etc module this Useful for safely changing system files. Unlike the etc module this
won't remove or modify files with unexpected content. won't remove or modify files with unexpected content.
''; '';
@ -56,12 +60,12 @@ in
fi fi
done done
${concatMapStringsSep "\n" (f: '' ${concatMapStringsSep "\n" (f: ''
f="$(basename ${f})" f="$(basename ${f})"
if ! diff "${cfg.build.patches}/patches/$f" "/run/current-system/patches/$f" &> /dev/null; then if ! patch --reverse --dry-run -d / -p1 < '${f}' &> /dev/null; then
patch --forward --backup -d / -p1 < '${f}' || true patch --forward --backup -d / -p1 < '${f}' || true
fi fi
'') cfg.patches} '') cfg.patches}
''; '';
}; };