That's interesting, because to hit all those points I'd prefer Haskell! I've never found another language where it's so easy to jump into an unfamiliar codebas

That's interesting, because to hit all those points I'd prefer Haskell! I've never found another language where it's so easy to jump into an unfamiliar codebase, or to come back to code I wrote years ago and get started again immediately. By contrast, I don't think I could read idiomatic Java without requiring an IDE to help me navigate.