[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):

 Here's a more general approach that relies on plugins.

 {{{
 addCorePlugin :: GhcPlugins.Plugin -> Q ()
 }}}

 This arranges for a plugin to be inserted in the core2core passes. It
 saves the user the trouble of adding it at the top of the module:
 {{{
 {-# OPTIONS_GHC -fplugin=... #-}
 }}}

 The plugin can find the result of quasiquotations by making a pass over
 the module looking for some special function inserted by the quasiquoter
 for that sake.

 I have observed that GHC does not link the GHC api into the final
 executable when using plugins, I would hope that it doesn't do it either
 if we add it this way.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13608#comment:21>
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