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nixpkgs/pkgs/build-support/kernel/compress-firmware-xz.nix
Alyssa Ross 76405e3077
compressFirmwareXz: fix with empty lib/firmware
Fixes: 8aa8e0ce7f ("nixos/udev: compress all firmware if supported")
2022-05-26 07:08:50 +00:00

17 lines
579 B
Nix

{ runCommand }:
firmware:
runCommand "${firmware.name}-xz" {} ''
mkdir -p $out/lib
(cd ${firmware} && find lib/firmware -type d -print0) |
(cd $out && xargs -0 mkdir -v --)
(cd ${firmware} && find lib/firmware -type f -print0) |
(cd $out && xargs -0rtP "$NIX_BUILD_CORES" -n1 \
sh -c 'xz -9c -T1 -C crc32 --lzma2=dict=2MiB "${firmware}/$1" > "$1.xz"' --)
(cd ${firmware} && find lib/firmware -type l) | while read link; do
target="$(readlink "${firmware}/$link")"
ln -vs -- "''${target/^${firmware}/$out}.xz" "$out/$link.xz"
done
''