until -package:numeric-prelude -package:yesod-paginator -package:prelude-compat -package:numhask -package:elerea -package:foundation -package:snap-core -package:language-bash -is:exact is:exact -package:LambdaHack -package:ghc package:utility-ht

until :: Monad m => (a -> Bool) -> m a -> m a
utility-ht Control.Monad.HT
repeat action until result fulfills condition