nixpkgs/pkgs/build-support/kernel/initrd-compressor-meta.nix

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rec {
cat = {
executable = pkgs: "cat";
ubootName = "none";
extension = ".cpio";
};
gzip = {
executable = pkgs: "${pkgs.gzip}/bin/gzip";
defaultArgs = ["-9n"];
ubootName = "gzip";
extension = ".gz";
};
bzip2 = {
executable = pkgs: "${pkgs.bzip2}/bin/bzip2";
ubootName = "bzip2";
extension = ".bz2";
};
xz = {
executable = pkgs: "${pkgs.xz}/bin/xz";
defaultArgs = ["--check=crc32" "--lzma2=dict=512KiB"];
extension = ".xz";
};
lzma = {
executable = pkgs: "${pkgs.xz}/bin/lzma";
defaultArgs = ["--check=crc32" "--lzma1=dict=512KiB"];
ubootName = "lzma";
extension = ".lzma";
};
lz4 = {
executable = pkgs: "${pkgs.lz4}/bin/lz4";
defaultArgs = ["-l"];
ubootName = "lz4";
extension = ".lz4";
};
lzop = {
executable = pkgs: "${pkgs.lzop}/bin/lzop";
ubootName = "lzo";
extension = ".lzo";
};
zstd = {
executable = pkgs: "${pkgs.zstd}/bin/zstd";
defaultArgs = ["-10"];
ubootName = "zstd";
extension = ".zst";
};
pigz = gzip // {
executable = pkgs: "${pkgs.pigz}/bin/pigz";
};
pixz = xz // {
executable = pkgs: "${pkgs.pixz}/bin/pixz";
defaultArgs = [];
};
}