[MacPorts] #52582: ghc @7.8.3_4: RTS incompatibility with Sierra

[MacPorts]

#52582: ghc @7.8.3_4: RTS incompatibility with Sierra
-------------------------+-----------------------------
  Reporter:  shanemikel  |      Owner:  neverpanic
      Type:  defect      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.3.4
Resolution:              |   Keywords:  sierra haspatch
      Port:  ghc         |
-------------------------+-----------------------------

Comment (by shanemikel):

 we need
 https://github.com/haskell/cabal/commit/8cac8be30dd9a3f6fed82df77e3215c128be113e,
 which is now merged into Cabal v1.24.1.0 and
 https://ghc.haskell.org/trac/ghc/ticket/12479.

 That issue is closed in the GHC Trac, with a merged patch, but it's a
 little odd as the patch doesn't look related to these issues at all.
 Whatever, if Simon Marlow says it's good, it's good.

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Ticket URL: <https://trac.macports.org/ticket/52582#comment:10>
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