A follow-up: is it possible to load a namespace, and run a function from it in cider-interactive-eval? I have tried (cider-interactive-eval "(require 'dev) (in-ns 'dev) (restart)") and "(require 'dev) (dev/restart)", neither works, doesn't find the restart function.

I think dev is sometimes weird? What happens if you just run that from a repl?

I am actually using development, not dev, I wrote the message with dev for brevity, didn't know dev is weird. With development it works from the repl.