[GHC] #8400: Migrate the RTS to use libuv (or libev, or libevent)

[GHC]

#8400: Migrate the RTS to use libuv (or libev, or libevent)
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        Reporter:  schyler  |            Owner:  simonmar
            Type:  feature  |           Status:  new
  request                   |        Milestone:
        Priority:  normal   |          Version:
       Component:  Runtime  |         Keywords:
  System                    |     Architecture:  Unknown/Multiple
      Resolution:           |       Difficulty:  Project (more than a week)
Operating System:           |       Blocked By:
  Unknown/Multiple          |  Related Tickets:  635, 7353
 Type of failure:           |
  None/Unknown              |
       Test Case:           |
        Blocking:           |
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Comment (by schyler):

 Correction: kqueue/epoll support currently does exist, but it seems to be
 in GHC.Event rather than baked into the RTS (?). #7353 discusses using
 IOCP on Windows.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8400#comment:1>
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