[MacPorts] #71745: glib2 @2.78.4_1: build error: ModuleNotFoundError: No module named 'packaging'

[MacPorts]

#71745: glib2 @2.78.4_1: build error: ModuleNotFoundError: No module named
'packaging'
---------------------+---------------------
  Reporter:  kencu   |      Owner:  mascguy
      Type:  defect  |     Status:  closed
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:  fixed   |   Keywords:
      Port:  glib2   |
---------------------+---------------------

Comment (by jmroot):

 That is of course just kicking the can down the road. It will happen again
 in a year without a fix to the underlying cause.

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Ticket URL: <https://trac.macports.org/ticket/71745#comment:14>
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