Confused about phrasing a `coll-of` about phrase HOT 3 OPEN

In such situations, it's always a good idea to define a default phrase which simply returns the problem:

(defphraser :default
  [_ problem]
  problem)

with that, (phrase/phrase-first {} ::coll-of-ints [:a]) returns:

{:path [],
 :pred int?,
 :val :a,
 :via [:grape/coll-of-ints],
 :in [0],
 :phrase.alpha/mappings {},
 :phrase.alpha/via ()}

here you can see that the :pred is only int? without a namespace. Your phraser on the other hand is registered with the predicate clojure.core/int?. Thats not the same.

Here we have a spec bug. Spec should use clojure.core/int? as predicted and not simply int?. They used to use simple symbols of press everywhere in the past. I thing they just forgot to add the namespace here.

A workaround is to use a registered spec like your ::just-int in s/coll-of like so:

(s/def ::coll-of-ints (s/coll-of ::just-int))

I'll look for an existing or open an issue in the Clojure JIRA. This issue stays open until upstream is fixed.

from phrase.

The following upstream issue applies: https://dev.clojure.org/jira/browse/CLJ-2168

from phrase.

Thanks @alexanderkiel, I appreciate your detailed explanation!

from phrase.