anchor.diff:    Path = filename:join(data_dir(), "barrel_config"),
     ok = filelib:ensure_dir(Path),
     Path.
  -  
  +
   persist_config(Conf) ->
     file:write_file(conf_path(), jsx:encode(Conf)).
   
  
positive.code:     {[], [], State},
      Dbs
    ),
    
    case Dbs -- Dbs2 of
      [] -> {Loaded, State2};
      NDbs ->
  
negative.code:                <<"databases">> => []},
        ok = persist_config(Conf),
        {ok, Conf}
    end.
  