I've upgraded gorilla-repl to clojure 1.9.0-beta2, and deployed a version on the Mastodon C clojars https://clojars.org/kixi/gorilla-repl
it all seems to work, but if you're using this and you have any issues I'd be curious to know.
I also submitted a PR, but it's all pretty dead atm https://github.com/JonyEpsilon/gorilla-repl/pull/275
(I appreciate maintainers don't necessarily have time, so hopefully that'll pick up at some point)
also: specs! \o/
leiningen plugin https://clojars.org/kixi/lein-gorilla