anchor.diff:  { stdenv
  -, fetchurl
  +, fetchzip
   , cmake
   , gettext
  +, lib
   , perl
   
   , atk
  
positive.code: 
  let
    channel = "0.4";
    version = "${channel}.0.1";
  in
  stdenv.mkDerivation rec {
    name = "granite-${version}";
  
    src = fetchurl {
      url = "https://launchpad.net/granite/${channel}/${version}/"
        + "+download/${name}.tar.xz";
      sha256 = "95a142a8befeedc35a089d638e759b657905508dc3007036d6c1fa3efe94c4dd";
    };
  
    nativeBuildInputs = [
  
negative.code:     )
    '';
  
    meta = with lib; {
      description = "An extension to GTK+ used by elementary OS";
      homepage = https://github.com/elementary/granite/;
      license = licenses.lgpl3;
      maintainers = with maintainers; [
        codyopel
  