[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         |
-------------------------+-----------------------------
Changes (by stevecheckoway):

 * Attachment "Portfile.diff" added.

 Trivial Portfile modification to use the patch.

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