I installed leiningen and ran lein swank,
- sudo lein deps
- lein swank
Aquamacs has everything about SLIME, so it's OK.
Solution to this problem
David helped me to be out of trouble. As Aquamacs has built-in SLIME, I didn't need anything complex about the setup. I just needed one line - (slime-setup '(slime-repl)).
sudo
forlein deps
(or any other Leiningen-related commands); (2) do not mix JLine with Emacs. Other than that, could you paste in a complete example of your attempt at interacting with the REPL (from the very start up to at least the "numbers like 1,2,3")? Also, I've written a sort of a meta-tutorial on setting up Clojure with Emacs here: stackoverflow.com/questions/2285437/… -- it's likely to be applicable to Aquamacs as well. – Michał Marczyk