Yes

Ok. Should I purge the env with the current plan if I do so?

Oh, I see. I had this cache/context issue in pathom2. By doing this, we can discover dynamically which keys pathom3 create in the process

(def keys-to-dissoc 
  (let [env (pci/register 
              [(pco/resolver `a
                 {::pco/output [:a]}
                 (fn [env _]
                   {:a (set  (keys env))}))
               (pco/mutation `b 
                 {}
                 (fn [_ _]))])
        init-ks (set (keys env))]
    (remove init-ks (:a (p.eql/process env [:a])))))

Well when I call process in a resolver, the output I get is different (empty) from when I get when I call that same query outside the resolver. It works when I pass the env before that resolver call.