user=> (spec-tools.parse/parse-spec (s/nonconforming int?))
{:type nil}
I believe this defmethod is correct though, s/nonconforming only needs to delegate immediately to "pass through" the spec it is wrapping.
(defmethod spec-tools.parse/parse-form 'clojure.spec.alpha/nonconforming [_ form options]
(spec-tools.parse/parse-spec-with-spec-ref (second form) options))