[GHC] #9191: Semi-exported names

[GHC]

#9191: Semi-exported names
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        Reporter:  dfeuer            |            Owner:
            Type:  feature request   |           Status:  new
        Priority:  low               |        Milestone:
       Component:  Compiler          |          Version:  7.8.2
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Comment (by carter):

 While the *goal* of this suggestion is great, the *means* is a bit
 questionable, or at least theres some folks already working to spec out an
 even better approach (though nothings mature yet)

 I think the work in progress to endow GHC with a module type system
 actually subsumes this idea. see http://plv.mpi-sws.org/backpack/  and
 https://ghc.haskell.org/trac/ghc/wiki/Backpack

 In that setting, you import wrt a *signature* of what you expect a module
 to have, which will be a subset of the module exports.
 This naturally solves your revealing/hiding/hidden/explicit notions in a
 much nicer way I think.

 Do you think those works will subsume your proposal?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9191#comment:3>
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