#12432: TypeInType: open type family application as type family return kind fails to compile -------------------------------------+------------------------------------- Reporter: j6carey | Owner: Type: bug | Status: closed Priority: normal | Milestone: Component: Compiler (Type | Version: 8.0.1 checker) | Resolution: duplicate | Keywords: Operating System: Linux | Architecture: Type of failure: GHC rejects | Unknown/Multiple valid program | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by goldfire): * status: new => closed * resolution: => duplicate Comment: This is due to the fact that GHC processes instances after other type declarations. Fixed in HEAD by @alexvieth. Workaround: use multiple modules or use an empty top-level declaration splice `$(return [])` to force GHC to compile the instances earlier. Thanks for reporting! -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12432#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler