#12679: Permit abstract data types in signatures that don't have kind * -------------------------------------+------------------------------------- Reporter: ezyang | Owner: Type: feature request | Status: new Priority: low | Milestone: Component: Compiler (Type | Version: 8.1 checker) | Resolution: | Keywords: backpack 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): This is, I think, another example of the tension between `Constraint` and `*`. See #11715. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12679#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler