[GHC] #12596: can't find interface-file declaration

[GHC]

#12596: can't find interface-file declaration
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        Reporter:  mwotton           |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.1
      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 simonpj):

 An intermediate position, which I think I prefer, would be to define a
 type of "global" names, somthing like this
 {{{
 data GlobalName = GN { gn_pkg :: PkgName
                      , gn_mod :: ModName
                      , gn_occ :: OccName }

 }}}
 and use that in `base`.  Then a Template Haskell `Name` coudl be a
 `GlobalName`, but it could also be a number of other TH-specific forms
 which don't belong in `base`.

 Doing this would break some (but perhpas not many) TH clients.  I'm not
 sure if it's worth it.

 Perhaps an intermediate position is to define `GlobalName` in `base` and
 use it in `Constr`, but not (yet) inflict it on TH.  That's more like your
 "duplicate it" approach.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12596#comment:6>
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