anchor.diff:      "-DENABLE_X11_TARGET=OFF"
       "-DUSE_ACCELERATE=0"
       "-DUSE_SYSTEM_MALLOC=ON"
  -  ] ++ optional (!enableGtk2Plugins) "-DENABLE_PLUGIN_PROCESS_GTK2=OFF"
  -    ++ optional (stdenv.isLinux && enableGLES) "-DENABLE_GLES2=ON";
  +  ] ++ optional (stdenv.isLinux && enableGLES) "-DENABLE_GLES2=ON";
   
     postPatch = ''
       patchShebangs .
  
positive.code:     systemd
      wayland
      xdg-dbus-proxy
    ] ++ optional enableGeoLocation geoclue2
      ++ optional enableGtk2Plugins gtk2;
  
    propagatedBuildInputs = [
      gtk3
  
negative.code: }:
  
  assert enableGeoLocation -> geoclue2 != null;
  
  with stdenv.lib;
  
  