[MacPorts] #63748: xsel 1.2.0 fails to build on macOS 12.0.1

[MacPorts]

#63748: xsel 1.2.0 fails to build on macOS 12.0.1
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  Reporter:  derekschrock  |      Owner:  ryandesign
      Type:  defect        |     Status:  assigned
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.7.1
Resolution:                |   Keywords:  monterey
      Port:  xsel          |
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Comment (by ryandesign):

 It is technically possible, of course. Though I can't say that I
 understand the issues at hand here.

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Ticket URL: <https://trac.macports.org/ticket/63748#comment:5>
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