anchor.diff:      mesa # for libgbm
       nspr
       nss
  -    stdenv.cc.cc
     ];
   
     dontBuild = true;
  
positive.code: { lib, stdenv, makeWrapper, fetchurl, dpkg, alsa-lib, atk, cairo, cups, dbus, expat
  , fontconfig, freetype, gdk-pixbuf, glib, gnome2, pango, mesa, nspr, nss, gtk3, gtk2
  , at-spi2-atk, gsettings-desktop-schemas, gobject-introspection, wrapGAppsHook
  , libX11, libXScrnSaver, libXcomposite, libXcursor, libXdamage, libXext
  , libXfixes, libXi, libXrandr, libXrender, libXtst, libxcb, nghttp2
  
negative.code:     glib
      gnome2.GConf
      pango
      gtk3
      gsettings-desktop-schemas
      libX11
  