[MacPorts] #42242: LibreCAD: Build fails on buildbots

[MacPorts]

#42242: LibreCAD: Build fails on buildbots
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  Reporter:  cal@…     |      Owner:  librecad@…
      Type:  defect    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.2.1
Resolution:            |   Keywords:
      Port:  librecad  |
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Comment (by cal@…):

 Yes, it is possible to revert to an older version on older platforms. See
 https://trac.macports.org/browser/trunk/dports/devel/ld64/Portfile?marks=79-107#L75
 for an example how to do that.

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Ticket URL: <https://trac.macports.org/ticket/42242#comment:2>
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