until -package:numeric-prelude -package:util -package:xmonad-contrib -package:LambdaHack -package:language-bash -package:singletons-base is:exact -package:classy-prelude -package:mixed-types-num package:utility-ht

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