M-x package-install clojure-mode
Provides font-lock, indentation, and navigation for the Clojure
Users of older Emacs (pre-22) should get version 1.4:
Slime integration has been removed; see the 1.x releases if you need it.
Using clojure-mode with paredit is highly recommended. Use paredit
as you would with any other minor mode; for instance:
;; require or autoload paredit-mode
(add-hook 'clojure-mode-hook 'paredit-mode)
See nREPL.el (http://github.com/kingtim/nrepl.el) for
better interaction with subprocesses via nREPL.