#9858: Typeable instances should be kind-aware -------------------------------------+------------------------------------- Reporter: dreixel | Owner: dreixel Type: bug | Status: new Priority: highest | Milestone: 7.10.1 Component: Compiler | Version: 7.9 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: None/Unknown | Unknown/Multiple Blocked By: | Test Case: Related Tickets: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- Comment (by int-e): Replying to [comment:49 int-e]:
{{{ f = \(p :: Proxy Proxy) -> typeRep p }}}
Note that currently, the function has type `Proxy Proxy -> Typeable`. What will the type be under the proposed medium term solution? If we want full backward compatibility (and I personally don't think we should strive for that for examples like this one) then passing hidden extra evidence is the only way to go. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9858#comment:50 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler