@ben.boeckel, this merge causes a build failure wrt Python wrapping in Windows.
It seems the linker is unable to find the Python library:
LINK : fatal error LNK1104: cannot open file 'python37.lib'
I can get a build if I set VTK_PYTHON_OPTIONAL_LINK to OFF.
This popped up a while back in VTK_PYTHON_OPTIONAL_LINK