Orphan instances for the RIO type in the rio package

Version on this page:
LTS Haskell 22.26:
Stackage Nightly 2024-06-20:
Latest on Hackage:

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MIT licensed by Michael Snoyman
Maintained by [email protected]
This version can be pinned in stack with:rio-orphans-,1612

Module documentation for


Provides orphan instances for the RIO data type. Currently supports:

  • MonadCatch and MonadMask from exceptions
  • MonadBase from transformers-base
  • MonadBaseControl from monad-control
  • MonadResource from resourcet


Changelog for rio-orphans

  • Add an instance for MonadLogger typeclass, from the monad-logger library

  • Initial release