anchor.diff:      GConf
       gdk_pixbuf
       glib
  -    gst_plugins_base
  -    gstreamer
       gtk
       libgcrypt
       libpng
       nss
       pango
       qt4
  -    sqlite
       stdenv.cc.gcc
       xlibs.libX11
       xlibs.libXcomposite
  
positive.code:     xlibs.libXrender
      xlibs.libXrender
      xlibs.libXScrnSaver
      #xlibs.libXss
    ];
  
  in
  
negative.code: { fetchurl, stdenv, dpkg, xlibs, qt4, alsaLib, makeWrapper, openssl, freetype
  , glib, pango, cairo, atk, gdk_pixbuf, gtk, cups, nspr, nss, libpng, GConf
  , libgcrypt, chromium, udev, fontconfig
  , dbus, expat }:
  
  assert stdenv.system == "i686-linux" || stdenv.system == "x86_64-linux";
  