Bug#1016600: siconos: vtk[6,7] removal

[Adrian Bunk]

On Wed, Aug 03, 2022 at 10:42:08PM +0200, Sebastian Ramacher wrote:
> Source: siconos
> Version: 4.3.1+dfsg-2
> Severity: serious
> X-Debbugs-Cc: sramacher at debian.org
> Tags: sid bookworm
> Control: block 1016597 by -1
> User: gladk at debian.org
> Usertags: vtk6_vtk7_removal
> 
> Based on #1013156 and similar bugs:
> 
> Dear maintainer,
> 
> Debian archive has now three major versions of the VTK (The
> Visualization Toolkit) package: vtk6, vtk7 and vtk9. Old vesions
> (vtk6 and vtk7) are not supported by upstream and the package itself
> is not easy for the mainance.
> 
> We aim to drop old and deprecated version vtk6 and vtk7 packages before
> the freeze of the Debian 12 Bookworm. Your package depends on vtk6 or
> vtk7. Thus we ask you to migrate it to the latest vtk9 package.

Two observations regarding the usage of VTK in siconos:

There is WITH_VTK in siconos that does not seem to build with VTK 9,
but it's anyway not enabled.

The only current usage of VTK is python3-vtk7 in siconos-mechanics-tools.
This might need upstrream fixes like
  https://github.com/siconos/siconos/pull/437

> Cheers

cu
Adrian