until -package:numeric-prelude -package:streaming -package:yesod-paginator -package:numhask -package:ghc-lib-parser -package:xmonad-contrib -package:snap-core is:exact -package:hledger-web package:utility-ht

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