[GHC] #16013: :kind! accepts unsaturated type aliases

[GHC]

#16013: :kind! accepts unsaturated type aliases
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        Reporter:  dmwit             |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.6.3
       Component:  Compiler          |              Version:  8.4.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #13962            |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by RyanGlScott):

 Replying to [comment:3 dmwit]:
 > whereas `Id Foo` is not a partial application of a type synonym but
 rather the application of a type (family) to a partial application of a
 type synonym.

 Indeed. Still, removing this feature would be a breaking change (albeit a
 slight one), so that's something to consider. It might be worth opening a
 [https://github.com/ghc-proposals/ghc-proposals GHC proposal] about this.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/16013#comment:4>
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