[MacPorts] #56241: jack @ 1.9.12_0 fails to upgrade due to using installed headers

[MacPorts]

#56241: jack @ 1.9.12_0 fails to upgrade due to using installed headers
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  Reporter:  ci42    |      Owner:  neverpanic
      Type:  defect  |     Status:  closed
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:  fixed   |   Keywords:
      Port:  jack    |
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Comment (by neverpanic):

 Upstream at https://github.com/jackaudio/jack2/issues/343, jack2 should
 bundle a newer version of waf.

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Ticket URL: <https://trac.macports.org/ticket/56241#comment:10>
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