exerl

case os:getenv("EXERL_TEST_ELIXIR") of
    false ->
        CONFIG;
    Version ->
        Select = fun(Deps) ->
            [
                case Dep of
                    {elixir_full, {ex, _}} ->
                        {elixir_full, {ex, {tag, "v" ++ Version}}};
                    _ ->
                        Dep
                end
             || Dep <- Deps
            ]
        end,
        [
            case Entry of
                {deps, Deps} ->
                    {deps, Select(Deps)};
                {profiles, Profiles} ->
                    {profiles, [
                        {Name, [
                            case Option of
                                {deps, Deps} -> {deps, Select(Deps)};
                                _ -> Option
                            end
                         || Option <- Options
                        ]}
                     || {Name, Options} <- Profiles
                    ]};
                _ ->
                    Entry
            end
         || Entry <- CONFIG
        ]
end.