71 lines
2.1 KiB
Nix
71 lines
2.1 KiB
Nix
{ lib, stdenv
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, fetchurl
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, xz
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, writeText
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}:
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# Note: this package is used for bootstrapping fetchurl, and thus
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# cannot use fetchpatch! All mutable patches (generated by GitHub or
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# cgit) that are needed here should be included directly in Nixpkgs as
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# files.
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stdenv.mkDerivation rec {
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pname = "gzip";
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version = "1.12";
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src = fetchurl {
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url = "mirror://gnu/gzip/${pname}-${version}.tar.xz";
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sha256 = "sha256-zl4D5Rn2N+H4FAEazjXE+HszwLur7sNbr1+9NHnpGVY=";
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};
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outputs = [ "out" "man" "info" ];
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enableParallelBuilding = true;
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nativeBuildInputs = [ xz.bin ];
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makeFlags = [
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"SHELL=/bin/sh"
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"GREP=grep"
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# gzip 1.12 doesn't build `zless` unless it can find `less`, but we
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# can avoid having `less` as a build input if we just override these.
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"ZLESS_MAN=zless.1"
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"ZLESS_PROG=zless"
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];
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# Many gzip executables are shell scripts that depend upon other gzip
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# executables being in $PATH. Rather than try to re-write all the
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# internal cross-references, just add $out/bin to PATH at the top of
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# all the executables that are shell scripts.
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preFixup = ''
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sed -i '1{;/#!\/bin\/sh/aPATH="'$out'/bin:$PATH"
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}' $out/bin/*
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'';
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# set GZIP env variable to "-n" to stop gzip from adding timestamps
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# to archive headers: https://github.com/NixOS/nixpkgs/issues/86348
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setupHook = writeText "setup-hook" ''
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export GZIP="-n"
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'';
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meta = {
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homepage = "https://www.gnu.org/software/gzip/";
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description = "GNU zip compression program";
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longDescription =
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''gzip (GNU zip) is a popular data compression program written by
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Jean-loup Gailly for the GNU project. Mark Adler wrote the
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decompression part.
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We developed this program as a replacement for compress because of
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the Unisys and IBM patents covering the LZW algorithm used by
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compress. These patents made it impossible for us to use compress,
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and we needed a replacement. The superior compression ratio of gzip
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is just a bonus.
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'';
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platforms = lib.platforms.all;
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license = lib.licenses.gpl3Plus;
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};
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}
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