Flexible config via defn-macro

flex-config.clj

(def *config* nil)

(defn wrap-configged-fn
  [f]
  (fn [& [maybe-config :as args]]
    (if (and *config* (not (identical? *config* maybe-config)))
      (apply f *config* args)
      (apply f args))))

(defmacro defn-with-config
  ... ; wrap with above fn
  )