mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-11-23 07:23:20 +00:00
b6ef9ffdfd
Closes #267442 $ nix path-info -Sh /nix/store/qj1dm7wfw5m3mxf1gn3fdm0az9y1h5ny-linux-firmware-20240312-xz /nix/store/qj1dm7wfw5m3mxf1gn3fdm0az9y1h5ny-linux-firmware-20240312-xz 440.3M $ nix path-info -Sh /nix/store/c3szcjxb3g990dbiz7llwmkaf0bi98j2-linux-firmware-20240312-zstd /nix/store/c3szcjxb3g990dbiz7llwmkaf0bi98j2-linux-firmware-20240312-zstd 460.6M This is an increase of 4.4%, but OTOH zstd has a significantly higher decompression speed[1]. [1] https://gregoryszorc.com/blog/2017/03/07/better-compression-with-zstandard/
44 lines
1.4 KiB
Nix
44 lines
1.4 KiB
Nix
{ runCommand, lib, type ? "zstd", zstd }:
|
|
|
|
firmware:
|
|
|
|
let
|
|
compressor = {
|
|
xz = {
|
|
ext = "xz";
|
|
nativeBuildInputs = [ ];
|
|
cmd = file: target: ''xz -9c -T1 -C crc32 --lzma2=dict=2MiB "${file}" > "${target}"'';
|
|
};
|
|
zstd = {
|
|
ext = "zst";
|
|
nativeBuildInputs = [ zstd ];
|
|
cmd = file: target: ''zstd -T1 -19 --long --check -f "${file}" -o "${target}"'';
|
|
};
|
|
}.${type} or (throw "Unsupported compressor type for firmware.");
|
|
|
|
args = {
|
|
allowedRequisites = [];
|
|
inherit (compressor) nativeBuildInputs;
|
|
} // lib.optionalAttrs (firmware ? meta) { inherit (firmware) meta; };
|
|
in
|
|
|
|
runCommand "${firmware.name}-${type}" args ''
|
|
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 '${compressor.cmd "${firmware}/$1" "$1.${compressor.ext}"}' --)
|
|
(cd ${firmware} && find lib/firmware -type l) | while read link; do
|
|
target="$(readlink "${firmware}/$link")"
|
|
if [ -f "${firmware}/$link" ]; then
|
|
ln -vs -- "''${target/^${firmware}/$out}.${compressor.ext}" "$out/$link.${compressor.ext}"
|
|
else
|
|
ln -vs -- "''${target/^${firmware}/$out}" "$out/$link"
|
|
fi
|
|
done
|
|
|
|
echo "Checking for broken symlinks:"
|
|
find -L $out -type l -print -execdir false -- '{}' '+'
|
|
''
|