[Debian-med-packaging] Bug#895900: invesalius: Please port to python3

[Gert Wollny]

Package: invesalius
Version: 3.1.1-3
Severity: important

Dear Maintainer,

Invesalius is the only package that depends on python-*gdcm, and gdcm
is currently 
going to a transition to provide python3-*gdcm instead. 

This change is also imposed by moving forward with VTK for which we now
also provide 
python3 packages. Unfortunately both, vtk and gdcm, don't make it easy
to provide bindings for both 
python 2 and 3 in one build (and if they would, I'm not sure whether
they would be 
co-installable). 

python3-vtk7 is now available in unstable, and python3-*gdcm is in
experimental, so please consider 
porting the package to python3, or co-ordinate with upstream to do so. 

Many thanks,
Gert