pkgs/development/libraries/libpng/default.nix

   1 { lib, stdenv, fetchurl, zlib, apngSupport ? true }:
   2
   3 assert zlib != null;
   4
   5 let
   6   patchVersion = "1.6.37";
   7   patch_src = fetchurl {
   8     url = "mirror://sourceforge/libpng-apng/libpng-${patchVersion}-apng.patch.gz";
   9     sha256 = "1dh0250mw9b2hx7cdmnb2blk7ddl49n6vx8zz7jdmiwxy38v4fw2";
  10   };
  11   whenPatched = lib.optionalString apngSupport;
  12
  13 in stdenv.mkDerivation rec {
  14   pname = "libpng" + whenPatched "-apng";
  15   version = "1.6.37";
  16
  17   src = fetchurl {
  18     url = "mirror://sourceforge/libpng/libpng-${version}.tar.xz";
  19     sha256 = "1jl8in381z0128vgxnvn33nln6hzckl7l7j9nqvkaf1m9n1p0pjh";
  20   };
  21   postPatch = whenPatched "gunzip < ${patch_src} | patch -Np1";
  22
  23   outputs = [ "out" "dev" "man" ];
  24   outputBin = "dev";
  25
  26   propagatedBuildInputs = [ zlib ];
  27
  28   doCheck = true;
  29
  30   passthru = { inherit zlib; };
  31
  32   meta = with lib; {
  33     description = "The official reference implementation for the PNG file format" + whenPatched " with animation patch";
  34     homepage = "http://www.libpng.org/pub/png/libpng.html";
  35     license = licenses.libpng2;
  36     platforms = platforms.all;
  37     maintainers = [ maintainers.vcunat ];
  38   };
  39 }