defphrase not matching set parameter about phrase HOT 1 OPEN

;; Need :a or :b 
(s/def ::rule #(some #{:a :b} (keys %)))

;; When check {:x 1}, of-course it raises error
(s/explain-data ::rule {:x 1})

;; When phrase
(p/phrase-first {} ::rule {:x 1})

;; It CAN be invoked and show "errro 1"
(p/defphraser #(some #{:a :b} (keys %)) [_ _] "error 1")

;; It CAN NOT be invoked
(p/defphraser #(some my-hash (keys %)) [_ _] "error 2")

;; It CAN NOT be invoked
(p/defphraser #(some my-hash (keys %))  [_ _ my-hash]  "error 3")