[GHC] #16247: GHC 8.6 Core Lint regression (Kind application error)

[GHC]

#16247: GHC 8.6 Core Lint regression (Kind application error)
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        Reporter:  RyanGlScott       |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.10.1
       Component:  Compiler (Type    |              Version:  8.6.3
  checker)                           |
      Resolution:                    |             Keywords:  TypeInType
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  crash or panic                     |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by RyanGlScott):

 * cc: simonpj (added)


Comment:

 This regression was introduced in commit
 2bbdd00c6d70bdc31ff78e2a42b26159c8717856 (`Orient TyVar/TyVar equalities
 with deepest on the left`).

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/16247#comment:1>
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