anchor.diff:  , gnome2
   , gtk2
   , libX11
  +, libxcb
   , libXScrnSaver
   , libXcomposite
   , libXcursor
  
positive.code: let
  
    mirror = https://get.geo.opera.com/pub/opera/desktop;
    version = "41.0.2353.56";
  
    rpath = stdenv.lib.makeLibraryPath [
  
  
negative.code:     libXrandr.out
      libXrender.out
      libXtst.out
      libxcb.out
      libnotify.out
      nspr.out
      nss.out
  