anchor.diff:  , libepoxy
   , librsvg
   , mpv
  -, pythonPackages
  +, python2Packages
   , wayland
   , xorg
   }:
  
positive.code: 
  stdenv.mkDerivation rec {
    name = "gnome-mpv-${version}";
    version = "2016-05-25";
  
    src = fetchFromGitHub {
      owner = "gnome-mpv";
      repo = "gnome-mpv";
      rev = "b1141f5c405b5b8d3cef63f74ca92fa0a59700fe";
      sha256 = "8fea8e4df66bfdceff418074a10f68a9ea6f8e3421a04f27060eab268329c65f";
    };
  
    nativeBuildInputs = [
  
negative.code:     libepoxy
      librsvg
      mpv
      python2Packages.youtube-dl
      wayland
      xorg.libX11
    ];
  