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23 lines
702 B
Nix
23 lines
702 B
Nix
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# This function downloads and normalizes a patch/diff file.
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# This is primarily useful for dynamically generated patches,
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# such as GitHub's or cgit's, where the non-significant content parts
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# often change with updating of git or cgit.
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# stripLen acts as the -p parameter when applying a patch.
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{ fetchurl, patchutils }:
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{ stripLen ? 0, ... }@args:
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fetchurl ({
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postFetch = ''
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tmpfile="$TMPDIR/${args.sha256}"
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"${patchutils}/bin/lsdiff" "$out" \
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| sort -u | sed -e 's/[*?]/\\&/g' \
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| xargs -I{} \
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"${patchutils}/bin/filterdiff" \
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--include={} \
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--strip=${toString stripLen} \
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--clean "$out" > "$tmpfile"
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mv "$tmpfile" "$out"
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'';
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} // args)
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