kludge.clj

(def *sep* "/")
(def *foo-jar* "foo.jar")
(def *foo-lib* (str-join *sep* ["lib" *foo-jar*]))
(def *where*
     ["../foo-idea/out/artifacts/foo_jar"])

(defn find-foo [paths]
  (if (seq paths)
    (let [path (first paths)
          full-path (str-join *sep* [path *foo-jar*])]
      (if (.exists (file full-path))
        full-path
        (recur (rest paths))))
    nil))

(defn install-foo []
  (let [path (find-foo *where*)]
    (copy (file path) (file (str-join *sep* ["lib" *foo-jar*])))))

(if (.exists (file *foo-jar*))
  (println "Found foo Jar")
  (install-foo))