[MacPorts] #45337: py-graveyard: avoid useless binary package download and buildbot errors

[MacPorts]

#45337: py-graveyard: avoid useless binary package download and buildbot errors
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  Reporter:  petr@…        |      Owner:  larryv@…
      Type:  defect        |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.3.1
Resolution:                |   Keywords:
      Port:  py-graveyard  |
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Comment (by jmr@…):

 Replying to [comment:1 larryv@…]:
 > I don’t know how Buildbot decides which ports to try rebuilding. I
 assume that the buildslaves reindex their ports trees and process the
 ports that have changed.

 It simply builds all portfiles touched by each changeset.

 source:contrib/buildbot/master.cfg#L189

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Ticket URL: <https://trac.macports.org/ticket/45337#comment:2>
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