At this point I don't understand why to use a JVM language with anything but Java. Java is a "good enough" language now and is still the premier ecosystem driver, getting all of the big-budget upgrades and attention -- but it's still a PITA, mainly because of the terrible tooling surrounding deploying an app with the JVM. My point is, the JVM is both the best and the worst thing about Java, so if you're clojure (cough common lisps) or scala (cough OCAML/Haskell) it seems like you're making life hard for no reason -- there are at least equivalent if not better alternatives that can actually compile to a deployable binary.

If you want to punish yourself.