anchor.diff:      gettext
       libxslt
       desktop-file-utils
  -    docbook_xsl
  +    docbook-xsl-nons
       docbook_xml_dtd_42
       wrapGAppsHook
       python3
  
positive.code:   };
  
    meta = with lib; {
      broken = true; # Tracker 3 not supported and it cannot start Tracker 2.
      homepage = "https://wiki.gnome.org/Apps/Books";
      description = "An e-book manager application for GNOME";
      maintainers = teams.gnome.members;
  
negative.code: , gdk-pixbuf
  , gsettings-desktop-schemas
  , adwaita-icon-theme
  , docbook-xsl-nons
  , docbook_xml_dtd_42
  , desktop-file-utils
  , python3
  