anchor.diff:  , ninja
   , libxslt
   , gtk3
  +, enableBackend ? stdenv.isLinux
   , webkitgtk_4_1
   , json-glib
   , librest_1_0
  
positive.code:   meta = with lib; {
      homepage = "https://wiki.gnome.org/Projects/GnomeOnlineAccounts";
      description = "Single sign-on framework for GNOME";
      platforms = platforms.linux;
      license = licenses.lgpl2Plus;
      maintainers = teams.gnome.members;
    };
  
negative.code:   pname = "gnome-online-accounts";
    version = "3.46.0";
  
    outputs = [ "out" "dev" ] ++ lib.optionals enableBackend [ "man" "devdoc" ];
  
    # https://gitlab.gnome.org/GNOME/gnome-online-accounts/issues/87
    src = fetchFromGitLab {
  