MIT licensed by Michael Snoyman, Francesco Mazzoli
Maintained by

Module documentation for

This version can be pinned in stack with:unliftio-core-,1081


Provides the core MonadUnliftIO typeclass, instances for base and transformers, and basic utility functions. Typically, you’ll want to use the unliftio library, which provides more functionality (and a much better description).


  • Add wrappedWithRunInIO.

  • Doc improvements.
  • Inline functions in Control.Monad.IO.Unlift module #4.
  • Fully polymorphic withRunInIO #12.
  • Move withRunInIO into the MonadUnliftIO typeclass itself#13

  • Initial release.