[MacPorts] #54785: R-app 1.68.1 fails to build on 10.13 beta 9 (high sierra) with Xcode 9.0 beta 6

[MacPorts]

#54785: R-app 1.68.1 fails to build on 10.13 beta 9 (high sierra)  with Xcode 9.0
beta 6
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  Reporter:  AP1010  |      Owner:  kjell.konis@…
      Type:  defect  |     Status:  assigned
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:  2.4.1
Resolution:          |   Keywords:  highsierra sierra xcode9
      Port:  R-app   |
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Comment (by kencu):

 It appears we are years out of date on this port, which is presently at
 3.6.2 as of today

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Ticket URL: <https://trac.macports.org/ticket/54785#comment:13>
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