[MacPorts] #70799: R: all compilers blacklisted on macOS 15

[MacPorts]

#70799: R: all compilers blacklisted on macOS 15
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  Reporter:  i0ntempest  |      Owner:  (none)
      Type:  defect      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:  sequoia
      Port:  R           |
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Comment (by cjones051073):

 b.t.w. you don' have to, for now, change the compilers used on macOS14 or
 older. In the longer term it would be a good idea, but you could just dump
 the version for macOS15+ to versions now supported there. Given nothing
 builds there at present you would not even need to rev bump anything.

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Ticket URL: <https://trac.macports.org/ticket/70799#comment:8>
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