[Paraview] Is USE_EXTERNAL_VTK supported with ParaView 5.1.2?

[Utkarsh Ayachit]

> Would it be easy for you to make the ParaView installation directory usable
> as VTK_DIR by adding the required cmake files? Or is there a more difficult
> problem underneath? The missing VTKTargets.cmake has been discussed several
> times in the past with no real solution.

We can certainly support that use-case. I've reported an issue:
https://gitlab.kitware.com/paraview/paraview/issues/16865

Utkarsh