#9111: base should export Typeable instances of its promoted data constructors -------------------------------------+------------------------------------ Reporter: goldfire | Owner: Type: feature request | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.8.2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: -------------------------------------+------------------------------------ Comment (by crockeea): Replying to [comment:3 goldfire]:
For the problem reported in the first comment -- about a `Typeable` instance for `Symbol`s (and presumably `Nat`s) -- the implementation technique is somewhat different and might best be something for Iavor. [http://www.haskell.org/pipermail/haskell-cafe/2013-August/109993.html This message] from August 2013 suggests that he is on it, but I don't know if there has been progress since then.
I just asked Iavor about that message. His response (6/4/14): "I don't think anything has happened with this, but we discussed it some time ago and as far as I recall there were no theoretical or technical difficulties ---it just has to get done. I'll put it on my (now getting longish :-) todo list." -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9111#comment:18 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler