[GHC] #7730: :info and polykinds

[GHC]

#7730: :info and polykinds
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        Reporter:  monoidal                 |            Owner:  archblob
            Type:  bug                      |           Status:  new
        Priority:  normal                   |        Milestone:  7.10.1
       Component:  Compiler (Type checker)  |          Version:  7.6.2
      Resolution:                           |         Keywords:
Operating System:  Unknown/Multiple         |     Architecture:
 Type of failure:  None/Unknown             |  Unknown/Multiple
       Test Case:                           |       Difficulty:  Unknown
        Blocking:                           |       Blocked By:
                                            |  Related Tickets:  #8776
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Comment (by archblob):

 @simonmar suggestion would be easier because we already pass a name to
 {{{pprIfaceDecl}}} in order to print things in context and elide
 everything not searched for, so when needing qualified names we could get
 everything to the left of the last (.) in the supplied name and prefix the
 occ names with that.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7730#comment:40>
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