[MacPorts] #51620: py-pyqt5: fix DBus module build and pyversion conflicts, support multiple Qt5 ports

[MacPorts]

#51620: py-pyqt5: fix DBus module build and pyversion conflicts, support multiple
Qt5 ports
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  Reporter:  RJVB         |      Owner:  mkae
      Type:  enhancement  |     Status:  assigned
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:
      Port:  py-pyqt5     |
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Comment (by mojca):

 See also #52500.

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Ticket URL: <https://trac.macports.org/ticket/51620#comment:2>
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