[GHC] #13608: Expose the type of quasiquotes

[GHC]

#13608: Expose the type of quasiquotes
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        Reporter:                    |                Owner:
  facundo.dominguez                  |  facundo.dominguez
            Type:  bug               |               Status:  patch
        Priority:  normal            |            Milestone:
       Component:  Template Haskell  |              Version:  8.0.1
      Resolution:                    |             Keywords:  QuasiQuotes
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  12778             |  Differential Rev(s):  Phab:D3610
       Wiki Page:                    |
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Comment (by facundo.dominguez):

 > `addPostProcessor :: (CoreExpr -> IO (CoreExpr, [CoreBind])) -> Q ()`

 Will this require linking ghc with the application? `CoreExpr` and
 `CoreBind` are not exposed in a leaner library AFAIK. If it were not for
 this problem, it could be useful. Only the compiler needs to execute this
 code, so perhaps there is a way.

 I just proposed an alternative in
 https://ghc.haskell.org/trac/ghc/ticket/12778#comment:11

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13608#comment:16>
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