[MacPorts] #42541: ncarg: switch NCAR graphics to automatic download

[MacPorts]

#42541: ncarg: switch NCAR graphics to automatic download
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  Reporter:  tony.mannucci@…  |      Owner:  takeshi@…
      Type:  enhancement      |     Status:  reopened
  Priority:  Normal           |  Milestone:
 Component:  ports            |    Version:
Resolution:                   |   Keywords:  haspatch
      Port:  ncarg            |
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Comment (by petr@…):

 I attached a patch for review.

 I would be great if this could be implemented. This would allow to build
 py-nio and py-ngl by the buildbots. Currently this fails because this
 dependency fails.

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Ticket URL: <https://trac.macports.org/ticket/42541#comment:12>
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