[MacPorts] #61359: py37-pip fails to build

[MacPorts]

#61359: py37-pip fails to build
-------------------------+----------------------
  Reporter:  andrewfree  |      Owner:  (none)
      Type:  defect      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.6.3
Resolution:              |   Keywords:  py37,pip
      Port:  py37-pip    |
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Changes (by andrewfree):

 * Attachment "main.log" added.

 build log

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Ticket URL: <https://trac.macports.org/ticket/61359>
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