[GHC] #14209: GHC 8.2.1 regression involving telescoping kind signature

[GHC]

#14209: GHC 8.2.1 regression involving telescoping kind signature
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        Reporter:  RyanGlScott       |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  high              |            Milestone:  8.2.2
       Component:  Compiler (Type    |              Version:  8.2.1
  checker)                           |
      Resolution:                    |             Keywords:  TypeInType
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  GHC rejects       |  Unknown/Multiple
  valid program                      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #13738            |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by RyanGlScott):

 * related:   => #13738


Comment:

 Actually, it turns out that this typechecks once again on GHC HEAD due to
 commit 0257dacf228024d0cc6ba247c707130637a25580 (`Refactor bindHsQTyVars
 and friends`).

 I can certainly add a test case, but this makes me wonder: should we merge
 0257dacf228024d0cc6ba247c707130637a25580 into GHC 8.2.2?

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14209#comment:1>
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