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

[GHC]

#9115: The kind of (=>)
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        Reporter:  kosmikus          |            Owner:
            Type:  feature request   |           Status:  closed
        Priority:  low               |        Milestone:
       Component:  Compiler          |          Version:  7.8.2
      Resolution:  wontfix           |         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 ekmett):

 goldfire:

 Note: the latter is slightly weaker, since in Eq a => Show a => Read a =>
 ..  you can only reference backwards up the chain.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9115#comment:5>
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