#12481: Add MonadFail instance for Either String -------------------------------------+------------------------------------- Reporter: hesiod | Owner: Type: feature | Status: new request | Priority: normal | Milestone: Component: Core | Version: Libraries | Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: Other Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- There seems to be the low hanging fruit of a MonadFail instance for Either String. {{{#!hs instance MonadFail (Either String) where fail = Left }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12481 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler