#13276: Unboxed sums are not Typeable -------------------------------------+------------------------------------- Reporter: Ben Gamari | Owner: (none) Type: feature | Status: new request | Priority: normal | Milestone: 8.4.1 Component: Compiler | Version: 8.0.1 Keywords: typeable | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- While the Typeable machinery introduce in the type-indexed Typeable rework (#11011) is fully capable of representing unboxed sums, we currently don't allow this since it would require that we generate an enormous number of bindings in `GHC.Types`. This is because we need to generate both `TyCon` and `KindRep` bindings for each type constructor and its promoted data constructors. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13276 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler