[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
---------------------+----------------------
  Reporter:  jmroot  |      Owner:  mascguy
      Type:  defect  |     Status:  assigned
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:          |   Keywords:
      Port:          |
---------------------+----------------------
Changes (by mascguy):

 * status:  new => assigned
 * cc: mascguy (removed)
 * owner:  (none) => mascguy


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Ticket URL: <https://trac.macports.org/ticket/65269#comment:6>
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