until -package:numeric-prelude -package:language-bash -package:distribution-opensuse -package:LambdaHack -package:singletons-base -package:clash-prelude -package:extra -is:exact -package:snap-core -package:yesod-paginator package:rebase -is:exact
until p f yields the result of applying
f
until
p holds.
Keep running an effectful computation until it returns a
Right value, collecting the Left's using a supplied
Monoid instance.