[MacPorts] #36904: grass: add wxPython variant

[MacPorts]

#36904: grass: add wxPython variant
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  Reporter:  drew.mueller@…  |      Owner:  g5pw@…
      Type:  enhancement     |     Status:  new
  Priority:  Normal          |  Milestone:
 Component:  ports           |    Version:
Resolution:                  |   Keywords:
      Port:  grass           |
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Comment (by vaccari@…):

 Tried (both in bash and in tcsh using setenv), no change...

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Ticket URL: <https://trac.macports.org/ticket/36904#comment:12>
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