anchor.diff:    '';
   
     meta = with stdenv.lib; {
  +    version = "0.12.0";
       description = "A media player that supports many video formats (MPlayer and mplayer2 fork)";
       homepage = http://mpv.io;
       license = licenses.gpl2Plus;
  
positive.code: 
    # Purity: Waf is normally downloaded by bootstrap.py, but
    # for purity reasons this behavior should be avoided.
    waf = fetchurl {
      url = http://ftp.waf.io/pub/release/waf-1.8.5;
      sha256 = "0gh266076pd9fzwkycskyd3kkv2kds9613blpxmn9w4glkiwmmh5";
    };
  in
  
  stdenv.mkDerivation rec {
    name = "mpv-${version}";
    version = "0.9.2";
  
    src = fetchurl {
      url = "https://github.com/mpv-player/mpv/archive/v${version}.tar.gz";
      sha256 = "0la7pmy75mq92kcrawdiw5idw6a46z7d15mlkgs0axyivdaqy560";
    };
  
    patchPhase = ''
  
negative.code:     '';
    };
  }
  # TODO: Wayland support
  # TODO: investigate caca support
  # TODO: investigate lua5_sockets bug
  