(.module:
  [library
   [lux "*"
    [abstract
     [monad {"+" [Monad]}]]
    [control
     ["[0]" try {"+" [Try]}]
     [concurrency
      ["[0]" async {"+" [Async]}]]]]])

(type: .public (Action a)
  (Async (Try a)))

(def: .public monad
  (Monad Action)
  (:expected (try.with async.monad)))