[MacPorts] #65619: libfmt @9.x: upstream changes break dependents; create new segregated port libfmt8

[MacPorts]

#65619: libfmt @9.x: upstream changes break dependents; create new segregated port
libfmt8
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  Reporter:  mascguy                             |      Owner:  mascguy
      Type:  defect                              |     Status:  assigned
  Priority:  Normal                              |  Milestone:
 Component:  ports                               |    Version:  2.7.2
Resolution:                                      |   Keywords:
      Port:  libfmt cantera poac mpd mkvtoolnix  |
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Comment (by mascguy):

 Replying to [comment:7 ken-matsui]:
 > Since I'm an owner of `poac`, I'll dig into the error while not sure I
 can fix it soon. I would be grateful if you could create the versioned
 `libfmt8`. Thank you.

 Sounds good, I'll try to get this taken care of ASAP.

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Ticket URL: <https://trac.macports.org/ticket/65619#comment:8>
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