[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 citizenrich):

 It worked to get past the issue, then the original one came up:
 Here's the latest: https://pastebin.com/hdNwTzTQ

 There's nothing critical on this system. I'm happy to remove MP and redo
 MP installation and try again. Is there a best command for that?

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Ticket URL: <https://trac.macports.org/ticket/60972#comment:13>
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