Re: [GHC] #10755: Add `MonadPlus IO` and `Alternative IO` instances

#10755: Add `MonadPlus IO` and `Alternative IO` instances -------------------------------------+------------------------------------- Reporter: hvr | Owner: Type: task | Status: patch Priority: normal | Milestone: 8.0.1 Component: Core Libraries | Version: Resolution: | Keywords: report-impact Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D1148 -------------------------------------+------------------------------------- Comment (by Austin Seipp ): In [changeset:"b62605e53c167719b3bf8842eba628061cf22dd1/ghc" b62605e5/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="b62605e53c167719b3bf8842eba628061cf22dd1" Add `MonadPlus IO` and `Alternative IO` instances This requires adding a new primitive `mplusIO` to `GHC.IO` Update transformers submodule to accomodate extant orphan instances. Reviewed By: austin, bgamari Differential Revision: https://phabricator.haskell.org/D1148 GHC Trac Issues: #10755 }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10755#comment:12 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler