you can invoke cider-jack-in with a prefix argument. SPC u , ‘

how do you actually load the profile? I've tried adding with-profile test and it seems to still pick up the default dev profile

actually seems like you need the with-profile infont of the repl arg

so with-profile test repl :headless works. Also you can actually edit the cider-lein-parameters variable if needed

https://github.com/technomancy/leiningen/blob/master/doc/PROFILES.md#activating-profiles