[GHC] #9115: The kind of (=>)

[GHC]

#9115: The kind of (=>)
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        Reporter:  kosmikus          |            Owner:
            Type:  feature request   |           Status:  new
        Priority:  low               |        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:
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Comment (by kosmikus):

 Thanks a lot for the answer. This is indeed the kind of problem I was
 suspecting behind the limitation, but I wasn't quite sure what issues
 there are.

 I don't need this in any way. I've just been explaining constraint kinds
 in the context of Haskell courses and talks a couple of times recently,
 and I always thought it would be nice to be able to get GHCi to output the
 kind of `=>`. But I completely understand that it may be problematic to
 make `=>` completely first class.

 Feel free to close if you think this has no chance of being implemented
 any time soon.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9115#comment:2>
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