[MacPorts] #58029: vtk: Update to 8.2.0

[MacPorts]

#58029: vtk: Update to 8.2.0
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  Reporter:  luzpaz  |      Owner:  stromnov
      Type:  update  |     Status:  assigned
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:          |   Keywords:
      Port:  vtk     |
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Comment (by snarkhunter):

 vtk 8.2.0 fixes bugs that I care about in 8.1.2, so please do upgrade.

 I tried building 8.2.0. with the Portfile from 8.1.2, but had to make some
 modifications to get it to work.   I've attached the modified file, which
 works for me, but I don't really know if the changes that I made are
 correct.  I just added dependencies and config arguments until the
 compiler stopped complaining.

 -- Steve

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Ticket URL: <https://trac.macports.org/ticket/58029#comment:3>
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