CONFIG1= try <<0:16/float>> of
             _ -> lists:keystore(erl_opts, 1, CONFIG,
                                 {erl_opts, case lists:keyfind(erl_opts, 1, CONFIG) of
                                                {_, O} -> [{d, 'HAVE_float16'}|O];
                                                _ -> [{d, 'HAVE_float16'}]
                                            end})
         catch
             error:badarg -> CONFIG
         end,
case erlang:function_exported(rebar3, main, 1) of
    true -> CONFIG1;
    false ->
        case lists:keyfind(deps, 1, CONFIG1) of
            {_, Deps} ->
                lists:keystore(deps, 1, CONFIG1,
                               {deps, [{otpbp, {git, "https://github.com/Ledest/otpbp.git", {branch, "4.x"}}}]});
            _ -> CONFIG1
        end
end.