nixpkgs/pkgs/tools/compression/gzip/default.nix


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{ stdenv, fetchurl, xz }:

stdenv.mkDerivation rec {
  pname = "gzip";
  version = "1.10";

  src = fetchurl {
    url = "mirror://gnu/gzip/${pname}-${version}.tar.xz";
    sha256 = "1h6p374d3j8d4cdfydzls021xa2yby8myc0h8d6m8bc7k6ncq9c4";
  };

  outputs = [ "out" "man" "info" ];

  enableParallelBuilding = true;

  nativeBuildInputs = [ xz.bin ];

  makeFlags = [ "SHELL=/bin/sh" "GREP=grep" ];

  meta = {
    homepage = "https://www.gnu.org/software/gzip/";
    description = "GNU zip compression program";

    longDescription =
      ''gzip (GNU zip) is a popular data compression program written by
        Jean-loup Gailly for the GNU project.  Mark Adler wrote the
        decompression part.

        We developed this program as a replacement for compress because of
        the Unisys and IBM patents covering the LZW algorithm used by
        compress.  These patents made it impossible for us to use compress,
        and we needed a replacement.  The superior compression ratio of gzip
        is just a bonus.
      '';

    platforms = stdenv.lib.platforms.all;

    license = stdenv.lib.licenses.gpl3Plus;
  };
}