[MacPorts] #57358: Sundials upgrade to 2.9_0 fails

[MacPorts]

#57358: Sundials upgrade to 2.9_0 fails
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  Reporter:  dershow   |      Owner:  seanfarley
      Type:  defect    |     Status:  assigned
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:
Resolution:            |   Keywords:
      Port:  sundials  |
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Comment (by jsmoon7605):

 You need to install mpich-default with the variant gcc8 (sudo port install
 mpich-default +gcc8). It will be automatically activated. Then, you can
 uninstall the previous one (optional).

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Ticket URL: <https://trac.macports.org/ticket/57358#comment:3>
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