[MacPorts] #60972: py37-dateutil: build for 10.15

[MacPorts]

#60972: py37-dateutil: build for 10.15
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  Reporter:  citizenrich  |      Owner:  (none)
      Type:  update       |     Status:  closed
  Priority:  Low          |  Milestone:
 Component:  ports        |    Version:
Resolution:  worksforme   |   Keywords:
      Port:               |
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Comment (by ryandesign):

 Could you please attach the full main.log file here so I can take a look?

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Ticket URL: <https://trac.macports.org/ticket/60972#comment:8>
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