until -package:numeric-prelude -package:base-prelude -package:distribution-opensuse -package:Cabal -package:util -package:base-compat -package:conferer -package:foundation -package:Cabal-syntax -package:rebase -package:netwire package:utility-ht
repeat action until result fulfills condition
Take all elements until one matches. The matching element is returned,
too. This is the key difference to
takeWhile (not . p). It
holds:
forAllPredicates $ \p xs -> takeUntil p xs == fst (breakAfter p xs)