anchor.diff:  , gdk_pixbuf
   , glib
   , gnome2
  -, gtk2
  +, gtk3
   , libX11
   , libxcb
   , libXScrnSaver
  
positive.code: let
  
    mirror = https://get.geo.opera.com/pub/opera/desktop;
    version = "45.0.2552.898";
  
    rpath = stdenv.lib.makeLibraryPath [
  
  
negative.code:     gdk_pixbuf.out
      glib.out
      gnome2.GConf.out
      gtk3.out
      libX11.out
      libXScrnSaver.out
      libXcomposite.out
  