until -package:numeric-prelude -package:base-prelude -package:hosc -package:numhask -package:elerea -package:util is:exact -package:dimensional -package:LambdaHack -package:xmonad-contrib -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