until -package:numeric-prelude -package:base-prelude -package:distribution-opensuse -package:Cabal -is:exact -package:mixed-types-num -package:singletons-base is:exact -package:xmonad-contrib package:utility-ht

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