until -package:numeric-prelude -package:base-prelude -package:distribution-opensuse -package:Cabal -package:base -package:snap-core -package:ghc-lib-parser -package:llvm-hs-pure -package:monad-loops -package:utility-ht 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.