Bug#951300: python3-vtk7: can python extensions be built for all python versions?

[Drew Parsons]

Package: python3-vtk7
Version: 7.1.1+dfsg2-2
Severity: normal

Currently python3-vtk7 only builds .so extensions for python3.7.
So `import vtk` fails on python3.8.

Is it feasible to expand the build to cover all available python
versions?


-- System Information:
Debian Release: bullseye/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.4.0-3-amd64 (SMP w/4 CPU cores)
Kernel taint flags: TAINT_WARN, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8), LANGUAGE=en_AU:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages python3-vtk7 depends on:
ii  libc6                   2.29-10
ii  libstdc++6              10-20200211-1
ii  libvtk7.1p              7.1.1+dfsg2-2
ii  libvtk7.1p-qt           7.1.1+dfsg2-2
ii  python3                 3.7.5-3
ii  python3-autobahn        17.10.1+dfsg1-6
ii  python3-mpi4py          3.0.3-4
ii  python3-six             1.14.0-2
ii  python3-twisted         18.9.0-6
ii  python3-zope.interface  4.6.0-4

python3-vtk7 recommends no packages.

Versions of packages python3-vtk7 suggests:
pn  mayavi2        <none>
pn  vtk7-doc       <none>
pn  vtk7-examples  <none>

-- no debconf information