[MacPorts] #48508: gobject-introspection shouldn't require Python 2

[MacPorts]

#48508: gobject-introspection shouldn't require Python 2
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  Reporter:  tla@…                  |      Owner:  dbevans
      Type:  enhancement            |     Status:  assigned
  Priority:  Normal                 |  Milestone:
 Component:  ports                  |    Version:  2.3.3
Resolution:                         |   Keywords:
      Port:  gobject-introspection  |
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Comment (by eirnym):

 And it indeed compiles with Python3 on my local machine. I changed in port
 numbers and it worded.

 Also configure code and some other internals mention Python3, even version
 3.8 explicitly.

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Ticket URL: <https://trac.macports.org/ticket/48508#comment:5>
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