anchor.diff:  , python3
   , polkit
   , networkmanager
  +, gtk-doc
   , docbook-xsl-nons
   , at-spi2-core
   , libstartup_notification
  
positive.code:     pkg-config
      gettext
      docbook-xsl-nons
      docbook_xml_dtd_42
      perl
      wrapGAppsHook
      sassc
  
negative.code:     json-glib
    ];
  
    mesonFlags = [
      "-Dgtk_doc=true"
    ];
  
    postPatch = ''
      patchShebangs src/data-to-c.pl
      chmod +x meson/postinstall.py
  