anchor.diff:      meson
       ninja
       pkg-config
  -    gtk-doc
  +    gi-docgen
       docbook-xsl-nons
       wrapGAppsHook4
     ];
  
positive.code:     )
    '';
  
    passthru = {
      updateScript = gnome.updateScript {
        packageName = pname;
  
negative.code: , meson
  , ninja
  , pkg-config
  , gi-docgen
  , docbook-xsl-nons
  , gettext
  , libxml2
  