[MacPorts] #40417: arpack @3.1.3: remove openmpi from default variants

[MacPorts]

#40417: arpack @3.1.3: remove openmpi from default variants
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  Reporter:  takeshi@…  |      Owner:  mmoll@…
      Type:  defect     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.2.0
Resolution:             |   Keywords:
      Port:  arpack     |
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Comment (by takeshi@…):

 A solution could be use portgroup active_variants to specify openmpi
 variant in slepc and petsc. Another approach could be separate parpack
 from arpack as a subport of arpack and slepc and petsc depend on parpack.
 Although I am not familiar with the build process of arpack and how slepc
 and petsc need parpack, I imagine the latter would be cleaner. I have too
 may ports to maintain: how about adding openmaintainer?

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Ticket URL: <https://trac.macports.org/ticket/40417#comment:4>
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