anchor.diff:      pango
       stdenv.cc.cc
       systemd
  -    libstdcxx5
       libv4l
   
       xorg.libxkbfile
  
positive.code:     gnome3.gconf
      gdk_pixbuf
      gtk2
      
  
      gnome3.gnome-keyring
  
  
negative.code: { stdenv, fetchurl, dpkg, makeWrapper
  , alsaLib, atk, cairo, cups, curl, dbus, expat, fontconfig, freetype, gdk_pixbuf, glib, glibc, gnome3
  , gtk2, libnotify, libpulseaudio, libsecret, libv4l, nspr, nss, pango, systemd, xorg }:
  
  let
  
  