[MacPorts] #42860: PyMOL: update to 1.7.0

[MacPorts]

#42860: PyMOL: update to 1.7.0
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  Reporter:  matteo.tiberti@…  |      Owner:  howarth@…
      Type:  update            |     Status:  new
  Priority:  Normal            |  Milestone:
 Component:  ports             |    Version:  2.2.1
Resolution:                    |   Keywords:
      Port:  pymol             |
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Comment (by matteo.tiberti@…):

 Ok sorry, the first Portfile I have attached is wrong, it still refers to
 PyMOL 1.6.0 (and that's why it builds), I hadn't completely figured out
 how to perform the upgrade. I'm working on the correct patches now, they
 should be ready in a day or so

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Ticket URL: <https://trac.macports.org/ticket/42860#comment:4>
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