[MacPorts] #66103: muniversal portgroup header merging doesn't work on Ventura: diff: unrecognized option `--old-group-format=#ifdef __arm64__

[MacPorts]

#66103: muniversal portgroup header merging doesn't work on Ventura: diff:
unrecognized option `--old-group-format=#ifdef __arm64__
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  Reporter:  Morpheus-HH        |      Owner:  (none)
      Type:  defect             |     Status:  new
  Priority:  Normal             |  Milestone:
 Component:  ports              |    Version:  2.8.0
Resolution:                     |   Keywords:  ventura
      Port:  libffi, ossp-uuid  |
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Comment (by Gcenx):

 Replying to [comment:19 kencu]:
 > yup. luckily never need it universal!

 Well it shouldn’t be needed but I’ve seen Macports force build deps be
 +universal many times, luckily for {{{diffutils}}} at least it’s universal
 build didn’t actual need to diff stage.

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Ticket URL: <https://trac.macports.org/ticket/66103#comment:20>
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