Just to collaborate a little bit on this point. With leiningen things are not too bad.
A typical deployment instruction file (project.clj) looks like this and with "lein deps" you're all set up in a few seconds.
(defproject leiningen "0.5.0-SNAPSHOT" :description "A build tool designed to not set your hair on fire." :url "http://github.com/technomancy/leiningen :dependencies [[org.clojure/clojure "1.1.0"] [org.clojure/clojure-contrib "1.1.0"]] :dev-dependencies [[swank-clojure "1.2.1"]])