[GHC] #9840: Permit empty closed type families

[GHC]

#9840: Permit empty closed type families
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        Reporter:  adamgundry        |                Owner:  (none)
            Type:  feature request   |               Status:  closed
        Priority:  normal            |            Milestone:  8.0.1
       Component:  Compiler (Type    |              Version:  7.8.3
  checker)                           |             Keywords:
      Resolution:  fixed             |  TypeCheckerPlugins
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:  indexed-
                                     |  types/should_compile/T9840
      Blocked By:                    |             Blocking:
 Related Tickets:  #8028             |  Differential Rev(s):  Phab:D841
       Wiki Page:                    |
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Changes (by adamgundry):

 * keywords:   => TypeCheckerPlugins


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9840#comment:14>
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