anchor.diff:  { stdenv, fetchurl, buildPythonPackage
   , python, cython, pkgconfig
   , xorg, gtk, glib, pango, cairo, gdk_pixbuf, pygtk, atk, pygobject, pycairo
  -, ffmpeg_1, x264, libvpx, pil, libwebp }:
  +, ffmpeg, x264, libvpx, pil, libwebp }:
   
   buildPythonPackage rec {
     name = "xpra-0.9.5";
  -  
  +
     src = fetchurl {
       url = "http://xpra.org/src/${name}.tar.bz2";
       sha256 = "1qr9gxmfnkays9hrw2qki1jdkyxhbbkjx71gy23x423cfsxsjmiw";
     };
   
  -  buildInputs = [ 
  -    python cython pkgconfig 
  +  buildInputs = [
  +    python cython pkgconfig
   
       xorg.libX11 xorg.renderproto xorg.libXrender xorg.libXi xorg.inputproto xorg.kbproto
       xorg.randrproto xorg.damageproto xorg.compositeproto xorg.xextproto xorg.recordproto
  
positive.code: 
      pango cairo gdk_pixbuf atk gtk glib
  
      ffmpeg_1 libvpx x264 libwebp
    ];
  
    propagatedBuildInputs = [ 
      pil pygtk pygobject
    ];
  
  
negative.code:     NIX_CFLAGS_COMPILE="$NIX_CFLAGS_COMPILE $(pkg-config --cflags gtk+-2.0) $(pkg-config --cflags pygtk-2.0) $(pkg-config --cflags xtst)"
      python ./setup.py build --enable-Xdummy
    '';
  
    meta = {
      homepage = http://xpra.org/;
      description = "Persistent remote applications for X";
  