Adding pngnq.

svn path=/nixpkgs/trunk/; revision=20801

pkgs/tools/graphics/pngnq/default.nix

@@ -0,0 +1,18 @@
+{ stdenv, fetchurl, libpng }:
+
+stdenv.mkDerivation rec {
+  name = "pngnq-1.0";
+
+  src = fetchurl {
+    url = "mirror://sourceforge/pngnq/${name}.tar.gz";
+    sha256 = "19q07hlhr9p5d0wqgzyrcxdnqlczdwpiibcji0k2a6jfmxrcn4rl";
+  };
+
+  buildInputs = [ libpng ];
+
+  meta = {
+    homepage = http://pngnq.sourceforge.net/;
+    description = "A PNG quantizer";
+    license = "bsd";
+  };
+}

pkgs/top-level/all-packages.nix

@@ -1356,6 +1356,10 @@ let
     inherit fetchurl stdenv libpng;
   };
 
+  pngnq = import ../tools/graphics/pngnq {
+    inherit fetchurl stdenv libpng;
+  };
+
   povray = import ../tools/graphics/povray {
     inherit fetchurl stdenv;
   };