[GHC] #13420: Bizarre pretty-printing of closed type families in GHCi

[GHC]

#13420: Bizarre pretty-printing of closed type families in GHCi
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        Reporter:  RyanGlScott       |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  GHCi              |              Version:  8.0.2
      Resolution:                    |             Keywords:  TypeFamilies
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 goldfire):

 I do remember that this change was intentional (that is, I'm not surprised
 by your report) but the reasons are cloudy. I'd be happy if the binders
 were printed only with `-fprint-explicit-foralls` and agree that doing so
 is an improvement.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13420#comment:2>
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