[GHC] #12646: Type family reification misses a kind signature

[GHC]

#12646: Type family reification misses a kind signature
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        Reporter:  goldfire          |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.2.1
       Component:  Template Haskell  |              Version:  8.0.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by RyanGlScott):

 Actually, might this be a duplicate of #8953?
 https://ghc.haskell.org/trac/ghc/ticket/8953#comment:14 mentions that
 closed type families haven't been covered, which seems to be the scope of
 this ticket.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12646#comment:2>
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