[GHC] #7285: mkWeakMVar is non-compositional

[GHC]

#7285: mkWeakMVar is non-compositional
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              Reporter:  edsko       |            Owner:  ekmett
                  Type:  feature     |           Status:  new
  request                            |        Milestone:  7.10.1
              Priority:  normal      |          Version:  7.6.1
             Component:  Core        |         Keywords:
  Libraries                          |     Architecture:  Unknown/Multiple
            Resolution:              |       Difficulty:  Unknown
      Operating System:              |       Blocked By:
  Unknown/Multiple                   |  Related Tickets:
       Type of failure:              |
  None/Unknown                       |
             Test Case:              |
              Blocking:              |
Differential Revisions:              |
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Comment (by ekmett):

 I've sent out a proposal for discussion on libraries@ to seek community
 feedback, so we can finally clear this out. In general I'm in favor of
 making the change, though.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7285#comment:7>
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