[GHC] #10541: Expose kind information for type variables with reify

[GHC]

#10541: Expose kind information for type variables with reify
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        Reporter:  spinda            |                   Owner:
            Type:  feature request   |                  Status:  new
        Priority:  normal            |               Milestone:
       Component:  Template Haskell  |                 Version:  7.10.1
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  None/Unknown      |  Unknown/Multiple
      Blocked By:                    |               Test Case:
 Related Tickets:                    |                Blocking:
                                     |  Differential Revisions:
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Comment (by goldfire):

 Could you post your use-case? One thing I'm worried about here is the
 possibility that the result of a TH splice could affect a type variable's
 kind. For example:

 {{{
 foo :: forall a. Proxy a -> $( ... )
 }}}

 where the splice produces `a -> a`. If the code running in the splice
 needs the kind of `a`, we have a loop.

 Unless I'm missing something... which is entirely possible, as something
 smells wrong to me in my comment.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10541#comment:1>
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