#10056: Inconsistent precedence of ~ -------------------------------------+------------------------------------- Reporter: crockeea | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.8.4 (Parser) | Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: GHC rejects | Unknown/Multiple valid program | Test Case: Blocked By: | Blocking: Related Tickets: #10059 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by RyanGlScott): Edward Kmett notes [https://mail.haskell.org/pipermail/ghc- devs/2016-August/012537.html on the ghc-devs mailing list] that making `-XTypeOperators` allow the use of `(~)` is not a good idea, since it means that other compilers who wish to implement `-XTypeOperators` must now implement all of the ideas in the OutsideIn(X) paper, which is a big ask. It might be better to introduce a new pragma (`-XTypeEqualities`?) for this purpose. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10056#comment:28 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler