[MacPorts] #52355: darwinbuild: update for move to GitHub

[MacPorts]

#52355: darwinbuild: update for move to GitHub
--------------------------+--------------------
  Reporter:  e-t-h-a-n    |      Owner:  wms@…
      Type:  update       |     Status:  closed
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.3.4
Resolution:  fixed        |   Keywords:
      Port:  darwinbuild  |
--------------------------+--------------------

Comment (by mojca):

 Couldn't the `darwinbuild-legacy` port use something similar to
 {{{
 github.setup macosforge darwinbuild <number> darwinbuild-
 }}}
 as the version number?

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Ticket URL: <https://trac.macports.org/ticket/52355#comment:9>
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