[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@…):

 I have attached a slightly modified port file. It seems to build
 correctly, however, after launching PyMOL only the Viewer window shows up,
 and there's an application with the python logo working indefinitely and
 the control window never shows up. The same is happening with PyMOL 1.6
 from the official repos, so the problem might be different. Should I open
 a bug report for this?

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Ticket URL: <https://trac.macports.org/ticket/42860#comment:2>
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