I'd love to get your feedback on rebar3; I've heard that opinion repeated often, but not really often have I heard specifics that we could address directly.
I'm sure there are plenty of tricky traps that regulars have learned to work around and "just know how to use it without breaking it"; I have a suspicion a lot of unsatisfied people are those who come with different expectations of what the tool should do and how it should behave.
In these cases, they'll have a frustrating experience. I'd be interested to learn what it is so that we can make the whole thing better.
Ah good point. And rebar3 along with docs, and books are probably the first thing a newcomer will see when they explore Erlang the first time.