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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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GPG key ID: 373D8D8DF3FDA129
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 = ''
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
won't remove or modify files with unexpected content.
'';
@ -56,12 +60,12 @@ in
fi
done
${concatMapStringsSep "\n" (f: ''
f="$(basename ${f})"
if ! diff "${cfg.build.patches}/patches/$f" "/run/current-system/patches/$f" &> /dev/null; then
patch --forward --backup -d / -p1 < '${f}' || true
fi
'') cfg.patches}
${concatMapStringsSep "\n" (f: ''
f="$(basename ${f})"
if ! patch --reverse --dry-run -d / -p1 < '${f}' &> /dev/null; then
patch --forward --backup -d / -p1 < '${f}' || true
fi
'') cfg.patches}
'';
};