[MacPorts] #63069: vtk: migrate from python variants to subports

[MacPorts]

#63069: vtk: migrate from python variants to subports
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  Reporter:  mascguy  |      Owner:  mascguy
      Type:  defect   |     Status:  assigned
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:
Resolution:           |   Keywords:
      Port:  vtk      |
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Comment (by rubendibattista):

 Ok I see. I personally do not see any problem with this. The current VTK
 version is quite outdated, but I've been encountering few problems with
 the new versions build system (also related to Paraview).

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Ticket URL: <https://trac.macports.org/ticket/63069#comment:4>
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