[MacPorts] #65939: libunwind: do not force +universal on <11, perhaps?

[MacPorts]

#65939: libunwind: do not force +universal on <11, perhaps?
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  Reporter:  barracuda156  |      Owner:  jeremyhu
      Type:  defect        |     Status:  assigned
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.7.2
Resolution:                |   Keywords:  powerpc, snowleopard, rosetta
      Port:  libunwind     |
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Comment (by barracuda156):

 Replying to [comment:4 kencu]:
 > You could put forth a PR to disable universal building of libunwind and
 libcxx on such systems if you like.

 I will try :)

 There are some ports which happen to be ''holy cows'' (like Pythons),
 hopefully this is not one of those.

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Ticket URL: <https://trac.macports.org/ticket/65939#comment:5>
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