the clojure REPL doesn't support CLJC forms though, and before upgrading you don't get to control the reader

You sure? I thought I tried it successfully yesterday.

hmmm you're right... could have sworn it gave an error before. oh well all the better

Maybe you tested with nrepl?

could be

still a bit rough but unrepl.el now has basic elision support

also better state management, so you can run multiple sessions in parallel

(side note, let-alist rules)

Emacs Lisp's fun!