[MacPorts] #64579: py310-pyobjc @7.3_2 fails to build on MacOS 10.15

[MacPorts]

#64579: py310-pyobjc @7.3_2 fails to build on MacOS 10.15
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  Reporter:  Gandoon    |      Owner:  danchr
      Type:  defect     |     Status:  assigned
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.7.1
Resolution:             |   Keywords:
      Port:  py-pyobjc  |
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Comment (by Gandoon):

 == Workaround found ==

 I found a workaround now.
 The issue seems to be at least related to `setuptools`. By reverting to
 `distutils` the ''destroot'' phase and install worked.\\
 I also used the previously mentioned patch to solve the race conditions.
 The patch alone did not solve the issue. In the end I tested to revert the
 errors one by one, confirming that they passed the ''destroot'' and
 eventually reverted every framework component to `distutils`, and the port
 finally built and installed.

 Remains to see if it works as expected…

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Ticket URL: <https://trac.macports.org/ticket/64579#comment:4>
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