until -package:numeric-prelude -package:util -package:xmonad-contrib -package:base-compat -is:exact -package:protolude -package:intro -package:free -package:ghc -package:classy-prelude is:exact package:utility-ht

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