buildopts(Opts) ->
    [?DEFAULT_OPT_ACCESS, ?DEFAULT_HEIR] ++ lists:filter(
        fun
            (set) -> true;
            (ordered_set) -> true;
            (bag) -> true;
            (duplicate_bag) -> true;
            ({write_concurrency, _}) -> true;
            ({read_concurrency, _}) -> true;
            (compressed) -> true;
            ({keypos, _}) -> true;
            (_) -> false
        end,
        Opts
    ).