Почему моя задача Gradle всегда выполняется?

Вы можете получить исходный код в последних версиях clojure с функцией source.

user=> (source nth)
(defn nth
  "Returns the value at the index. get returns nil if index out of
  bounds, nth throws an exception unless not-found is supplied.  nth
  also works for strings, Java arrays, regex Matchers and Lists, and,
  in O(n) time, for sequences."
  {:inline (fn  [c i & nf] `(. clojure.lang.RT (nth ~c ~i ~@nf)))
   :inline-arities #{2 3}
   :added "1.0"}
  ([coll index] (. clojure.lang.RT (nth coll index)))
  ([coll index not-found] (. clojure.lang.RT (nth coll index not-found))))
nil

, чтобы получить строку как значение, которое вы можете обернуть в with-out-str:

user=> (with-out-str (source nth))
"(defn nth\n  \"Returns the value at the index. get returns nil if index out of\n  bounds, nth throws an exception unless not-found is supplied.  nth\n  also works for strings, Java arrays, regex Matchers and Lists, and,\n  in O(n) time, for sequences.\"\n  {:inline (fn  [c i & nf] `(. clojure.lang.RT (nth ~c ~i ~@nf)))\n   :inline-arities #{2 3}\n   :added \"1.0\"}\n  ([coll index] (. clojure.lang.RT (nth coll index)))\n  ([coll index not-found] (. clojure.lang.RT (nth coll index not-found))))\n"
user=>