until -package:numeric-prelude -package:base-prelude -package:hosc -package:numhask is:exact -package:basic-prelude -package:base -package:rebase -package:distribution-opensuse -package:elerea package:utility-ht

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