Haha, yes, as I mentioned in the email, this was an accidental side-effect.

My plan is to implement proper version constrains using something along the lines of this thing, I'm trying to [discuss this with rebar maintainers](https://github.com/rebar/rebar/issues/240), but don't seem to get a reply from them.

I'm aware of our previous proposal / implementation, but it needs to be generalised / revamped a bit, we discussed this with @thijsterlouw  earlier.