[MacPorts] #67055: python portgroup overwrites PYTHONPATH in test.env

[MacPorts]

#67055: python portgroup overwrites PYTHONPATH in test.env
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  Reporter:  dgilman  |      Owner:  reneeotten
      Type:  defect   |     Status:  assigned
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:
Resolution:           |   Keywords:
      Port:           |
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Comment (by jmroot):

 Replying to [comment:7 reneeotten]:
 > However, if the globbing is empty and thus as a result {{{PYTHONPATH}}}
 is so as well; this is set as {{{test.env-append}}} in the {{{pre-test}}}
 phase, which then overriden in the Portfile

 The main body of the Portfile is executed before any phases are run, so
 it's the other way round: the portgroup overrides the value set in the
 Portfile.

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Ticket URL: <https://trac.macports.org/ticket/67055#comment:8>
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