[MacPorts] #53978: buildbot: provide a way to rebuild all ports between two commits

[MacPorts]

#53978: buildbot: provide a way to rebuild all ports between two commits
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  Reporter:  mojca           |      Owner:  admin@…
      Type:  enhancement     |     Status:  new
  Priority:  Normal          |  Milestone:
 Component:  server/hosting  |    Version:
Resolution:                  |   Keywords:  buildbot
      Port:                  |
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Comment (by mojca):

 Thank you very much for the hint.

 But despite this trick I would still be in favour of supporting this out-
 of-the-box (providing just shasums rather than the full list of ports). We
 could use that same trick on the buildbot if needed.

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Ticket URL: <https://trac.macports.org/ticket/53978#comment:2>
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