until -package:numeric-prelude -package:base-prelude -package:distribution-opensuse -package:extra -is:exact -is:exact -package:ghc-lib-parser -package:prelude-compat -package:snap-core -package:ghc package:rebase
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.