[GHC] #12249: Template Haskell top level scoping error

[GHC]

#12249: Template Haskell top level scoping error
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        Reporter:  simonpj           |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Template Haskell  |              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 goldfire):

 Your last comment suggests a way to think about all of this: Each
 ''declaration group'' (as defined in the
 [https://downloads.haskell.org/~ghc/latest/docs/html/users_guide/glasgow_exts.html
 #template-haskell manual]) is its own unnamed module that exports all of
 its symbols. That actually might not be a bad way of implementing it
 either. (And `newName` identifiers should never be exported, as per
 discussion in comment:13:ticket:10599, yet to be finished.) In any case, I
 still say you're building some sort of ad-hoc implicit module system.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12249#comment:7>
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