anchor.diff:  { stdenv
  -, fetchurl
  +, fetchFromGitLab
   , pkgconfig
   , vala
   , glib
  +, meson
  +, ninja
  +, python3
   , libxslt
   , gtk3
  -, wrapGAppsHook
   , webkitgtk
   , json-glib
   , librest
  
positive.code:     libsoup
      webkitgtk
    ];
  
    passthru = {
      updateScript = gnome3.updateScript {
  
negative.code:     glib
      glib-networking
      gtk3
      gvfs # OwnCloud, Google Drive
      icu
      json-glib
      kerberos
  