Conj'ing a deque onto a set causes ClassCastException

[KingCode]

(require '[data.deque :as dq])
(conj [] (dq/deque 1))
;;=> [<top-(1)-bottom>]
(conj #{} (dq/deque 1))
;;=> Unhandled java.lang.ClassCastException
;;   data.deque.PersistentDeque cannot be cast to java.lang.Iterable

              core.clj: 5186  clojure.core/hash-ordered-coll
              core.clj:   -1  clojure.core/hash-ordered-coll
             deque.clj:   77  data.deque.PersistentDeque/hasheq
             Util.java:  177  clojure.lang.Util/dohasheq
             Util.java:  168  clojure.lang.Util/hasheq
PersistentHashMap.java:  120  clojure.lang.PersistentHashMap/hash
PersistentHashMap.java:  143  clojure.lang.PersistentHashMap/assoc
PersistentHashSet.java:   99  clojure.lang.PersistentHashSet/cons
PersistentHashSet.java:   17  clojure.lang.PersistentHashSet/cons
               RT.java:  673  clojure.lang.RT/conj
              core.clj:   85  clojure.core/conj
              core.clj:   82  clojure.core/conj

I encountered the issue also for type data.deque.PersistentDequeSeq, as I tried to extract the item using seq as a work-around. I ended up using map to obtain a non-data.deque type so was wondering if this is intentional? Thanks!

 (conj #{} (map identity (dq/deque 1)))
;;=> #{(1)} 

[namenu]

I intended `PersistentDeque's can be ordered (like vectors do). Collections can be ordered if each collection provides its own hash. https://clojure.org/reference/data_structures#_clojure_collection_hashes

PersistentDeque's hash is computed using hash-ordered-coll, and it's a bug that it doesn't reify Iterable also. I'll fix that.