clojure.spec weird

spec.clj

Borkdude@MacBook-Pro ~/Downloads/clojure-1.9.0-alpha15 $ java -cp clojure-1.9.0-alpha15.jar clojure.main
Clojure 1.9.0-alpha15
user=> (require '[clojure.spec :as s])
nil
user=> (s/def ::dependency
  '#{[org.clojure/core.async "0.3.442"]
     [prismatic/schema "1.1.4"]
     [com.stuartsierra/component "0.3.2"]
     #_[reloaded.repl "0.2.3"]})
:user/dependency
user=> (s/def ::dependency
  '#{[org.clojure/core.async "0.3.442"]
     [prismatic/schema "1.1.4"]
     [com.stuartsierra/component "0.3.2"]
     [reloaded.repl "0.2.3"]})
ClassNotFoundException reloaded.repl  java.net.URLClassLoader.findClass (URLClassLoader.java:381)
user=>