I have some environment variables listed in my dev-config.ednfile but they're all nil for some reason: dev-config.edn

{:dev true
 :dbtype "postgres"
 :dbname "card_app"
 :host "localhost"
 :user "postgres"
 :pass "pass"
 :db-port 5432
 :port 3000
 ;; when :nrepl-port is set the application starts the nREPL server on load
 :nrepl-port 7000}

(ns contact-services.db
  (:require
   [contact-services.config :refer [env]]
   ....)

(def cfg {:dbtype (:dbtype env) :dbname (:dbname env) :host (:host env) :user (:user env) :password (:pass env) :port (:db-port env)})