[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
-------------------------------------------------+----------------------
  Reporter:  mascguy                             |      Owner:  mascguy
      Type:  defect                              |     Status:  assigned
  Priority:  Normal                              |  Milestone:
 Component:  ports                               |    Version:  2.7.2
Resolution:                                      |   Keywords:  pending
      Port:  libfmt cantera poac mkvtoolnix mpd  |
-------------------------------------------------+----------------------

Comment (by Christopher Nielsen <mascguy@…>):

 In [changeset:"36d233c15a96cfa77b85276e1a12b3d80919077b/macports-ports"
 36d233c15a96cfa77b85276e1a12b3d80919077b/macports-ports] (master):
 {{{
 #!ConfigurableCommitTicketReference repository="macports-ports"
 revision="36d233c15a96cfa77b85276e1a12b3d80919077b"
 libfmt dependents: migrate to libfmt8/libfmt9
 See: https://trac.macports.org/ticket/65619
 Fixes: https://trac.macports.org/ticket/65635
 }}}

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Ticket URL: <https://trac.macports.org/ticket/65619#comment:20>
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