#11797: Template Haskell does not quantify over extra vars in class methods -------------------------------------+------------------------------------- Reporter: goldfire | Owner: Type: bug | Status: merge Priority: normal | Milestone: 8.0.1 Component: Template Haskell | Version: 8.1 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: | -------------------------------------+------------------------------------- Changes (by goldfire): * status: new => merge * milestone: => 8.0.1 Comment: This has perhaps unfortunate user-facing consequences, in that kind vars in type signatures now appear in quotes. Specifically `foo :: Proxy (a :: k) -> ()` now gets quantified over `k` and `a` when being quoted. This could cause trouble for someone trying to quote and then splice, who suddenly needs `-XTypeInType` to succeed. The problem is that I don't know how to reliably (and uninvasively) tell the type vars from the kind vars. This patch is needed for `singletons`, but I can work around if it's too late to merge. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11797#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler