[MacPorts] #68753: mpich-default +gcc13+fortran has broken mpicxx

[MacPorts]

#68753: mpich-default +gcc13+fortran has broken mpicxx
------------------------------+--------------------
 Reporter:  FreddieWitherden  |      Owner:  (none)
     Type:  defect            |     Status:  new
 Priority:  Normal            |  Milestone:
Component:  ports             |    Version:
 Keywords:                    |       Port:
------------------------------+--------------------
 Installing port `mpich-default +gcc13+fortran` on Apple silicon Sonoma and
 then doing `select --set mpi mpich-mp-fortran` leads to a broken `mpicxx`
 as:

 {{{
 $ mpicxx
 Error: Command line argument is needed!
 This script (/opt/local/bin/mpicxx) is being called recursively, check
 that MPICH_CXX does not refer to mpicxx.
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/68753>
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