#9858: Typeable instances should be kind-aware -------------------------------------+------------------------------------- Reporter: dreixel | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.12.1 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: Phab:D652 -------------------------------------+------------------------------------- Comment (by shachaf): This doesn't seem to be completely fixed: {{{ λ> type A = (() :: *) λ> type B = (() :: Constraint) λ> typeRep (Proxy :: Proxy A) == typeRep (Proxy :: Proxy B) True λ> typeRep (Proxy :: Proxy (Proxy A)) == typeRep (Proxy :: Proxy (Proxy B)) False }}} Though I can't think of a way to write `unsafeCoerce` in this case. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9858#comment:73 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler