technomancy/leiningen — comment on commit ee4783146161d2529c804881c2ec23fa86801da6
File:  line 0
By technomancy:

:use is on the path to being deprecated in favour of :require with a
:refer clause. We're not using 1.4.0 yet in which this is implemented,
but I just wanted to get ahead of the game.

http://dev.clojure.org/jira/browse/CLJ-879