anchor.diff:      #appstream-glib # tests fail if these tools are available
       desktop-file-utils
       docbook_xsl
  +    docbook_xml_dtd_43
  +    glibcLocales # for Meson's gtkdochelper
       gobjectIntrospection
       gtk-doc
       hicolor-icon-theme
  
positive.code:     "-Dwith_docs=true"
    ];
  
    pythonPath = with python3.pkgs; requiredPythonModules [ pygobject3 ];
  
    preFixup = ''
  
negative.code: { stdenv
  , desktop-file-utils
  , docbook_xsl
  , docbook_xml_dtd_43
  , fetchurl
  , flatpak
  , glibcLocales
  , gnome3
  , gobjectIntrospection
  , gspell
  