The previous commit that adds Java code is part of a larger project intended to
use Nix to package Clojure. I'd like to build something similar to @tazjin's
buildLisp except for Clojure instead of for Common Lisp. Once building for both
ecosystems is similarly easy, it will be easier for me to compare the two
languages. Right now `buildLisp` is so good that it attracts me to Common Lisp
even when I don't know the language.
