[GHC] #13962: GHCi allows unsaturated type family

[GHC]

#13962: GHCi allows unsaturated type family
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        Reporter:  Iceland_jack      |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.1
      Resolution:                    |             Keywords:  TypeFamilies
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #12089            |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by RyanGlScott):

 I see. I'm a bit embarrassed that I've been doing `:kind Map` all this
 time and never realized that I was doing something unsavory.

 I'm curious - how does type inference get muddled exactly? And moreover,
 is the particular way in which it becomes muddled relevant for `:kind`? If
 not, then I'd vote to leave things the way they are. Otherwise, we might
 want to reconsider.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13962#comment:4>
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