depot/third_party/nixpkgs/pkgs/build-support/kernel/compress-firmware-xz.nix
Default email 2ce5db779a Project import generated by Copybara.
GitOrigin-RevId: 48037fd90426e44e4bf03e6479e88a11453b9b66
2022-05-18 16:49:53 +02:00

16 lines
578 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 $out && xargs -0tP "$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
''