[MacPorts] #59239: sundials: builds fail on 10.6 buildbots; (was: mpich-default uses clang-8.0 at runtime but doesn't declare a dependency on it)

[MacPorts]

#59239: sundials: builds fail on 10.6 buildbots; (was: mpich-default uses clang-8.0
at runtime but doesn't declare a dependency on it)
-----------------------------+----------------------
  Reporter:  ryandesign      |      Owner:  mascguy
      Type:  defect          |     Status:  assigned
  Priority:  Normal          |  Milestone:
 Component:  ports           |    Version:  2.6.1
Resolution:                  |   Keywords:
      Port:  sundials mpich  |
-----------------------------+----------------------

Comment (by mascguy):

 Good News: `mpich` is building successfully for both Clang 9 and 10, on
 MacOS 10.6.

 So that should also fix the build for `sundials`, on the 10.6_x64
 buildbot. Beautiful!

-- 
Ticket URL: <https://trac.macports.org/ticket/59239#comment:10>
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