[GHC] #10653: PatternSynonyms should be imported/exported as part of the wildcard notation

[GHC]

#10653: PatternSynonyms should be imported/exported as part of the wildcard
notation
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        Reporter:  gridaphobe        |                   Owner:  mpickering
            Type:  feature request   |                  Status:  new
        Priority:  high              |               Milestone:  8.0.1
       Component:  Compiler          |                 Version:  7.11
      Resolution:                    |                Keywords:  pattern
                                     |  synonyms
Operating System:  Unknown/Multiple  |            Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Comment (by goldfire):

 I think Simon's worry is that there will be some inference of associations
 between pattern synonyms and datatypes. In the proposals as I see them,
 this is ''not'' the case. The programmer declares, in an export list, what
 to export with what. No type-checking needed. If we want (and I'm not sure
 we do), we can add validity checks after type-checking to make sure that
 associated pattern synonyms (or arbitrary values) have suitable types (for
 some yet-to-be-specified meaning of "suitable").

 Does that clarify?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10653#comment:22>
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