until -package:numeric-prelude -package:util -package:hedgehog -package:faktory -package:LambdaHack -package:distribution-opensuse -package:numhask -package:elerea -package:prelude-compat -package:dunai package:utility-ht is:exact

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