Heh, I’m well known around here as the proponent for good type systems. ^.^;
I made a Gradualixir plugin for mix that lets you use gradualizer like you can use dialyzer if you are curious. 
It’s not on hex.pm (use it from github master) since gradualizer is incomplete yet and thus not on hex.pm yet, and you can’t put things on hex.pm that depend on something that’s not on hex.pm.
