Why is :main namespace opened and loaded automatically by lein repl?

~/.lein/credential.clj {"" {:username "crocket" :password "passcode"}}

Is this in a wrong form?

Ok, that was solved.

~/.lein/profiles.clj

{:user {:plugins [[lein-license "0.1.3"]]}
 :repl {:plugins [[cider/cider-nrepl "0.10.0"]]
        :dependencies [[org.clojure/tools.nrepl "0.2.12"]]}}

Is this wrong?

Somehow :repl is ignored.