[MacPorts] #55455: github portgroup: ability to download files from more than one github project

[MacPorts]

#55455: github portgroup: ability to download files from more than one github
project
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  Reporter:  ryandesign   |      Owner:
      Type:  enhancement  |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:
      Port:               |
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Comment (by kencu):

 Without getting too fancy about it, homebrew has a concept of adding a
 `resource` that is specified simply by a complete URL. It is downloaded
 without further fanfare, and then can be used as desired.

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Ticket URL: <https://trac.macports.org/ticket/55455#comment:5>
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