[GHC] #15556: Inconsistent kind output for (->)

[GHC]

#15556: Inconsistent kind output for (->)
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        Reporter:  cvlad             |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.6.1
       Component:  GHCi              |              Version:  8.4.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Documentation     |  Unknown/Multiple
  bug                                |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by simonpj):

 Yes, that is its kind. See [https://www.microsoft.com/en-
 us/research/publication/levity-polymorphism/ Levity Polymorphism]
 (PLDI'17).

 Perhaps we should (somehow) suppress its levity-polymorphism, avoid avoid
 confusing people.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15556#comment:1>
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