until -package:numeric-prelude -package:yesod-paginator -package:prelude-compat -package:numhask -package:extra -package:intro -package:classy-prelude -package:utility-ht -package:IfElse -package:faktory -package:elerea package:selective
Keep running an effectful computation until it returns a
Right value, collecting the Left's using a supplied
Monoid instance.