anchor.diff:  , stdenv
   , gettext
   , fetchurl
  -, webkitgtk
  +, webkitgtk_4_1
   , pkg-config
   , gtk3
   , libhandy
  
positive.code:     gst_all_1.gst-plugins-base
      gst_all_1.gst-plugins-good
    ];
  
    # To reduce the GNOME ISO closure size.  Remove when other packages
    # are using webkit2gtk_4_1.
    configureFlags = ["--with-webkit2gtk-4-0"];
  
    passthru = {
      updateScript = gnome.updateScript {
  
negative.code:     gtk3
      libhandy
      glib
      webkitgtk_4_1
      sqlite
      libxml2
      libxslt
  