[GHC] #11051: GHCi with +t option set shows type representations

[GHC]

#11051: GHCi with +t option set shows type representations
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        Reporter:  bgamari           |                Owner:  simonpj
            Type:  bug               |               Status:  new
        Priority:  high              |            Milestone:  8.0.1
       Component:  Compiler          |              Version:  7.11
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Incorrect result  |  Unknown/Multiple
  at runtime                         |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by Simon Peyton Jones <simonpj@…>):

 In [changeset:"ec8a188a927a4db2e709541765e5ef545eae284c/ghc"
 ec8a188a/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="ec8a188a927a4db2e709541765e5ef545eae284c"
 Refactoring on IdInfo and system derived names

 Some modest refactoring, triggered in part by Trac #11051

 * Kill off PatSynId, ReflectionId in IdDetails
   They were barely used, and only for pretty-printing

 * Add helper function Id.mkExportedVanillaId, and use it

 * Polish up OccName.isDerivedOccName, as a predicate for
   definitions generated internally by GHC, which we
   might not want to show to the user.

 * Kill off unused OccName.mkDerivedTyConOcc

 * Shorten the derived OccNames for newtype and data
   instance axioms

 * A bit of related refactoring around newFamInstAxiomName
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11051#comment:12>
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