clip/stop runs stop functions twice

[onetom]

  (def cfg {:components
            {:wheel {:start {:part "wheel"}
                     :stop  prn}}})
  (def sys (clip/start cfg))
  (clip/stop cfg sys)
=> #'repl/cfg
=> #'repl/sys
{:part "wheel"}
{:part "wheel"}
=> {:wheel nil}

and the implementation indeed seems to simply repeat the stop operation:

(defn stopping-f
  [[k {:keys [stop]}]]
  (fn [rf acc]
    (stop! (get acc k) stop)
    (-> acc
        (rf k (stop! (get acc k) stop)))))

clip/src/juxt/clip/impl/core.cljc

Lines 337 to 342 in 26cb6c9

	(defn stopping-f
	[[k {:keys [stop]}]]
	(fn [rf acc]
	(stop! (get acc k) stop)
	(-> acc
	(rf k (stop! (get acc k) stop)))))

[onetom]

Here is a temporarily workaround for the issue.
Put this into your user.clj:

(intern
  'juxt.clip.impl.core 'stopping-f
  (fn
    [[k {:keys [stop]}]]
    (fn [rf acc]
      ;(juxt.clip.impl.core/stop! (get acc k) stop)
      (-> acc
          (rf k (juxt.clip.impl.core/stop! (get acc k) stop))))))

[SevereOverfl0w]

You're right to post this here, I did forget :)