#12160: MonadFail instance for (Either String)? -------------------------------------+------------------------------------- Reporter: lexi.lambda | Owner: Type: feature request | Status: new Priority: normal | Milestone: Component: libraries | Version: 8.0.1 (other) | Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #9588 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by hesiod): * cc: ekmett (added) Comment: So if I understood you right, ekmett, you would be fine with Iceland_jack's approach, i.e. `instance IsString str => MonadFail (Either str)`? In that case, I'd be glad to assemble a patch provided there are no other concerns remaining. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12160#comment:9 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler