until -package:numeric-prelude -package:base-prelude -package:hosc -package:numhask -package:Cabal -package:singletons-base -package:rebase -package:monad-loops -package:cabal-install-solver -package:prelude-compat -package:basic-prelude package:conferer

This utility function run a list of IO actions and returns the first that return a Just, if no one does, returns Nothing