until -package:numeric-prelude -package:util -package:xmonad-contrib -package:LambdaHack -package:ghc -package:free -package:intro -package:hosc -package:Cabal-syntax is:exact -package:faktory package:utility-ht

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