[MacPorts] #65269: mpi portgroup fails to select a C compiler variant if the default is disallowed

[MacPorts]

#65269: mpi portgroup fails to select a C compiler variant if the default is
disallowed
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  Reporter:  jmroot  |      Owner:  (none)
      Type:  defect  |     Status:  new
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:          |   Keywords:
      Port:          |
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Comment (by eborisch):

 I’ve been busy and haven’t had a chance to poke at this; if we had
 clang-14 mpi flavors would that resolve this issue?

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Ticket URL: <https://trac.macports.org/ticket/65269#comment:2>
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