[GHC] #9111: base should export Typeable instances of its promoted data constructors

GHC ghc-devs at haskell.org
Thu May 15 15:16:37 UTC 2014


#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 ekmett):

 You could in theory go through it and find it inside of something else
 that is `Data`, (abusing `showsTypeRep` for instance), but that `Data`
 instance couldn't have been written without `Typeable` for the part before
 anyways.

 This doesn't strike me as a serious problem, personally.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9111#comment:13>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler


More information about the ghc-tickets mailing list