44 lines
1.4 KiB
Nix
44 lines
1.4 KiB
Nix
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{ runCommand, lib, type ? "zstd", zstd }:
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firmware:
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let
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compressor = {
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xz = {
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ext = "xz";
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nativeBuildInputs = [ ];
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cmd = file: target: ''xz -9c -T1 -C crc32 --lzma2=dict=2MiB "${file}" > "${target}"'';
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};
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zstd = {
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ext = "zst";
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nativeBuildInputs = [ zstd ];
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cmd = file: target: ''zstd -T1 -19 --long --check -f "${file}" -o "${target}"'';
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};
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}.${type} or (throw "Unsupported compressor type for firmware.");
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args = {
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allowedRequisites = [];
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inherit (compressor) nativeBuildInputs;
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} // lib.optionalAttrs (firmware ? meta) { inherit (firmware) meta; };
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in
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runCommand "${firmware.name}-${type}" args ''
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mkdir -p $out/lib
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(cd ${firmware} && find lib/firmware -type d -print0) |
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(cd $out && xargs -0 mkdir -v --)
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(cd ${firmware} && find lib/firmware -type f -print0) |
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(cd $out && xargs -0rtP "$NIX_BUILD_CORES" -n1 \
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sh -c '${compressor.cmd "${firmware}/$1" "$1.${compressor.ext}"}' --)
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(cd ${firmware} && find lib/firmware -type l) | while read link; do
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target="$(readlink "${firmware}/$link")"
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if [ -f "${firmware}/$link" ]; then
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ln -vs -- "''${target/^${firmware}/$out}.${compressor.ext}" "$out/$link.${compressor.ext}"
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else
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ln -vs -- "''${target/^${firmware}/$out}" "$out/$link"
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fi
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done
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echo "Checking for broken symlinks:"
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find -L $out -type l -print -execdir false -- '{}' '+'
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''
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