anchor.diff:        --set FONTCONFIG_FILE "${fontsConf}" \
         --set XPRA_LOG_DIR "\$HOME/.xpra" \
         --set XPRA_INSTALL_PREFIX "$out" \
  +      --set GI_TYPELIB_PATH "$GI_TYPELIB_PATH" \
  +      --set GST_PLUGIN_SYSTEM_PATH_1_0 "$GST_PLUGIN_SYSTEM_PATH_1_0" \
         --prefix LD_LIBRARY_PATH : ${libfakeXinerama}/lib \
  -      --prefix PATH : ${stdenv.lib.makeBinPath [ getopt xorgserver xauth which utillinux ]}
  +      --prefix PATH : ${stdenv.lib.makeBinPath [ getopt xorgserver xauth which utillinux pulseaudioLight ]} \
     '';
   
     preCheck = "exit 0";
  
positive.code:   meta = {
      homepage = http://xpra.org/;
      description = "Persistent remote applications for X";
      platforms = stdenv.lib.platforms.linux;
      maintainers = with stdenv.lib.maintainers; [ tstrobel ];
    };
  }
  
negative.code: 
      ffmpeg libvpx x264 libwebp
  
      gobjectIntrospection
      gst_all_1.gstreamer
      gst_all_1.gst-plugins-base
      gst_all_1.gst-plugins-good
      gst_all_1.gst-plugins-bad
      gst_all_1.gst-libav
  
      makeWrapper
    ];
  
    propagatedBuildInputs = with pythonPackages; [
      pillow pygtk pygobject2 rencode pycrypto cryptography pycups lz4 dbus-python
      netifaces numpy websockify pygobject3 gst-python
    ];
  
    preBuild = ''
  