[MacPorts] #62807: openmpi/mpich: prune target compiler list; refactor duplicated logic, and simplify ports, via new portgroup (was: openmpi/mpich: refactor duplicated logic, and simplify ports, via new portgroup)

[MacPorts]

#62807: openmpi/mpich: prune target compiler list; refactor duplicated logic, and
simplify ports, via new portgroup
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  Reporter:  mascguy        |      Owner:  mascguy
      Type:  enhancement    |     Status:  assigned
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:
Resolution:                 |   Keywords:
      Port:  openmpi mpich  |
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Description changed by mascguy:

Old description:

> I envision this being a very iterative process, with the initial
> portgroup being something as simple as a few procs to eliminate copy-
> paste logic.
>
> Perhaps the portgroup might be named `mpiutil`?

New description:

 I envision this being a very iterative process, with the initial portgroup
 being something as simple as a few procs to eliminate copy-paste logic.

 Also prune the target compiler list significantly, whilst still supporting
 MacOS releases back to 10.6.

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Ticket URL: <https://trac.macports.org/ticket/62807#comment:15>
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