IsRebar3 = erlang:function_exported(rebar3, main, 1),

Rebar2Deps = [
    {lager, ".*", {git, "https://github.com/erlang-lager/lager.git", {tag, "3.9.2"}}}
],

case IsRebar3 of
    true ->
        CONFIG;
    false ->
        lists:keyreplace(deps, 1, CONFIG, {deps, Rebar2Deps})
end.