[MacPorts] #53231: QGIS @2_18_2_2 build failure

[MacPorts]

#53231: QGIS @2_18_2_2 build failure
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  Reporter:  gcarlino  |      Owner:  Veence
      Type:  defect    |     Status:  assigned
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.3.5
Resolution:            |   Keywords:
      Port:  QGIS      |
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Comment (by EJFielding):

 I also tried to build on MacOS 10.11.6, but I get the same errors. Can I
 step back to an older version of "py27-sip" or will that cause problems
 for other programs?

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Ticket URL: <https://trac.macports.org/ticket/53231#comment:3>
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