[frej]

Ocaml not unbearably slow when say running 10 simple tests. Ocaml is actually amazingly fast and a pleasure to work with.

Sbt is actually worse than dune+opam .

Ocaml has type inference globally so you are not required to spray type annotations at everything.

But Scala does have type directed lookup (type classes/ implicits).

Both have the curse of implementation/typing choices that stops you from doing the actual job ;)