(def uri-datomic "datomic:dev://localhost:4334/lweb")

(def conn-datomic (d/connect uri-datomic))

(def dbc (db conn-datomic))

(def release-results-ids (q '[:find ?c :where [?c :release/name]] dbc))

(defn get-releases [] (map #(let [entity (d/entity dbc (first %))] [(:release/name entity) (:epic/key entity)] ) release-results-ids))

(def release-def (map #(let [entity (d/entity dbc (first %))] [(:release/name entity) (:epic/key entity)] ) release-results-ids))

(first get-releases)
; returns java.lang.IllegalArgumentException: Don't know how to create ISeq from: lweb.models.db$get_releases
              RT.java:505 clojure.lang.RT.seqFrom
              RT.java:486 clojure.lang.RT.seq
              RT.java:578 clojure.lang.RT.first
              core.clj:55 clojure.core/first

(first release-def)
; returns: ["Release one" "e1"]
as expected