#15743: Nail down the Required/Inferred/Specified story -------------------------------------+------------------------------------- Reporter: simonpj | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.6.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by simonpj): But, to be clear, you could still give an explicit kind signature to `k` (at least, when we have explicit kind signatures) thus {{{ T :: forall k (c::k) -> forall (d::k). forall (a::Proxy c) (b :: Proxy d) -> SimilarKind a b -> Type }}} Given that signature, we should accept the declaration. So, even if we reject under (1) we have a route accepting it -- and I think it's arguable that if you need funny interleaving then it's a good thing to write the signature. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15743#comment:10 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler