#12160: MonadFail instance for (Either String)? -------------------------------------+------------------------------------- Reporter: lexi.lambda | Owner: (none) Type: feature request | Status: closed Priority: normal | Milestone: Component: libraries | Version: 8.0.1 (other) | Resolution: wontfix | 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 dmbergey): * status: new => closed * resolution: => wontfix Comment: As of 2018, the libraries committee has rejected this change. The mailing list discussion is at: https://mail.haskell.org/pipermail/libraries/2018-October/028988.html The concerns are that: - the instances "get in the way of a user who wants to treat the parameter uniformly" - `IsString` is too far from standard Haskell (and unlikely to be added to the standard) -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12160#comment:15 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler