If you've ever used an ML descendant you'll miss sum types wherever you go. If you've ever used Erlang you'll miss the OTP actor implementation wherever you go.
Yeah I do lol. It was the big motivation since we were writing more and more rust and missed the concurrency model. Please feel free to ping me for any further questions
It's come a long way since it started and I'm thrilled I can talk about it publicly now and it's usage at Meta (some at least lol).
