[[!comment format=mdwn
 username="http://joeyh.name/"
 ip="2001:4978:f:21a::2"
 subject="comment 12"
 date="2013-08-06T04:24:10Z"
 content="""
-f-Feed will disable the feature. -fFeed will try to force it on.

You can probably work out what's going wrong using cabal install -v3
"""]]