Unversioned install libraries, includes, etc
The latest iteration of the build system removed the ability to use unversioned install directories for libraries, includes, etc. We would like to have an option for this to simplify packaging, reduce path lengths, etc in Tomviz and I suspect other projects that package ParaView/VTK where there is no desire to support multiple versions.
I would guess that the default would be better as unversioned, only turning on versioning for distros and places where supporting multiple versions in the same prefix is useful (a dwindling use case in this day and age). I would be happy with some kind of option where I can turn versioning off, before we used VTK_INSTALL_* vars to do so.