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

[MacPorts]

#63069: vtk: migrate from python variants to subports
--------------------------+----------------------
  Reporter:  mascguy      |      Owner:  stromnov
      Type:  enhancement  |     Status:  assigned
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.7.2
Resolution:               |   Keywords:
      Port:  vtk          |
--------------------------+----------------------

Comment (by Dave-Allured):

 Would someone kindly give me a couple of tips on how to start for
 subports?  I will give this a try.  BTW, update 9.4.0 for VTK is imminent.

-- 
Ticket URL: <https://trac.macports.org/ticket/63069#comment:12>
MacPorts <https://www.macports.org/>
Ports system for macOS