anchor.diff:      systemd
       wayland
       xdg-dbus-proxy
  -  ] ++ optional enableGeoLocation geoclue2
  -    ++ optional enableGtk2Plugins gtk2;
  +  ] ++ optional enableGeoLocation geoclue2;
   
     propagatedBuildInputs = [
       gtk3
  
positive.code:     "-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";
  
    postPatch = ''
      patchShebangs .
  
negative.code: }:
  
  assert enableGeoLocation -> geoclue2 != null;
  
  with stdenv.lib;
  
  