until -package:numeric-prelude -package:streaming -package:yesod-paginator -package:mixed-types-num -is:exact -package:base -package:intro -package:elerea -package:distribution-opensuse 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