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

[Sebastian Ramacher]

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.

Cheers
-- 
Sebastian Ramacher