[GHC] #11432: Cannot export operator newtype

[GHC]

#11432: Cannot export operator newtype
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        Reporter:  phadej            |                Owner:  skvadrik
            Type:  bug               |               Status:  new
        Priority:  highest           |            Milestone:  8.0.1
       Component:  Compiler          |              Version:  8.0.1-rc1
      Resolution:                    |             Keywords:
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 skvadrik):

 slyfox helped me git-bisect the bug and it turns out that the faulty
 commit is ffc21506894c7887d3620423aaf86bc6113a1071. Commit message says:
 {{{
 - I found that the parser was parsing an import item like
       T( .. )
   as a *data constructor* T, and then using setRdrNameSpace to
   fix it.  Stupid!  So I changed the parser to parse a *type
   constructor* T, which means less use of setRdrNameSpace.
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11432#comment:17>
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