Biggest problem I had with Haskell was once you know the language you also need to learn a pile of extensions that any serious project is using. Also there is a

Biggest problem I had with Haskell was once you know the language you also need to learn a pile of extensions that any serious project is using. Also there is a tendency in the community to always look for the "best" (abstract) solution. It makes the whole ecosystem fast changing. I would prefer a more stable platform designed for engineers , something like Clojure but with types. Ocaml has a small community and Scala brings unnecessary complexity with its support for OOP.