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patchShebangs: preserve times, resolves #33084

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Close #33281.  Edits by vcunat:
 - use Eelco's idea: empty file instead of full copy
 - use longer name suffix to decrease the likelihood of collision
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Yegor Timoshenko 2018-01-01 17:05:46 +00:00 committed by Vladimír Čunát
parent ba6e0ae33d
commit 4b1b6ee6d1
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pkgs/build-support/setup-hooks/patch-shebangs.sh
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@ -54,7 +54,11 @@ patchShebangs() {
echo "$f: interpreter directive changed from \"$oldInterpreterLine\" to \"$newInterpreterLine\"" echo "$f: interpreter directive changed from \"$oldInterpreterLine\" to \"$newInterpreterLine\""
# escape the escape chars so that sed doesn't interpret them # escape the escape chars so that sed doesn't interpret them
escapedInterpreterLine=$(echo "$newInterpreterLine" | sed 's|\\|\\\\|g') escapedInterpreterLine=$(echo "$newInterpreterLine" | sed 's|\\|\\\\|g')
# Preserve times, see: https://github.com/NixOS/nixpkgs/pull/33281
touch -r "$f" "$f.timestamp"
sed -i -e "1 s|.*|#\!$escapedInterpreterLine|" "$f" sed -i -e "1 s|.*|#\!$escapedInterpreterLine|" "$f"
touch -r "$f.timestamp" "$f"
rm "$f.timestamp"
fi fi
fi fi
done done