[vtk-developers] New module system preview

[David Thompson]

Hi Ben,

I'm really looking forward to imported targets!

>  - Instead of `module.cmake`, there are `vtk.module` and `vtk.kit`
>    files. These are basically CMake argument lists, but no variable
>    expansion is allowed. If there are optional dependencies, they must
>    be private dependencies. Optional public dependencies indicate that
>    a new module should be made instead.

Is there a reason these things need to be separate files (vtk.module/vtk.kit) at all?

	Thanks,
	David