[MacPorts] #74194: glib2 fails to upgrade on Mac OS10.15

[MacPorts]

#74194: glib2 fails to upgrade on Mac OS10.15
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  Reporter:  lpagani91  |      Owner:  mascguy
      Type:  defect     |     Status:  assigned
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.12.5
Resolution:             |   Keywords:
      Port:  glib2      |
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Comment (by lpagani91):

 Finally, I renamed my /opt/local to a different name and reinstalled
 macports 2.15.2 from scratch and all install problems have disappeared.
 Only the pyopencl remains pending (#74263).

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Ticket URL: <https://trac.macports.org/ticket/74194#comment:11>
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