Upgrade to Python3

[Seb35]

Currently on Debian 10 this package depends on the package python, which is python2 (which reached its end-of-life on January 1, 2020). It should be upgraded to Python3.

On a fresh Debian 10, it is the only package depending on python2.

[dholl]

The longer this issue remains unaddressed, the more it is becoming critical.

According to this correspondence dated 2020-09-16, "The python package is now removed in testing":
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=970425

I found this out the hard way when updating packages on a Debian "testing" system, and aptitude wanted to "fix" the issues by removing the gandi-vm-config2 package.

Fortunately I caught it, and pinned these 3 packages at their last version that is depended upon by the python package (2.7.17-2), thus preventing their automatic upgrade 2.7.18 (which python does not depend on):
libpython2-stdlib
python2
python2-minimal

Anyhow, if gandi-vm-config doesn't update to python3, I'd hope that switching the gandi-vm-config2 package to depend on python2 instead of python would ease the transition for everyone in the next Debian stable release.

[Seb35]

The PR #26 is a first draft to remove Python3, but only a limited testing was done on it.

I issued an nmu version (non-maintainer upload) on my fork 2.41+nmu1, to be packaged with: (tested on Debian 11, the building might be executed on a developer machine)

sudo apt-get install build-essential devscripts
git clone -b debian/2.41+nmu1 https://github.com/Seb35/gandi-vm-config
cd gandi-vm-config
dpkg-buildpackage -us -uc

The .deb is in the parent directory (gandi-hosting-vm2_2.41+nmu1_all.deb). Transfer the .deb to the server, then install it with dpkg -i gandi-hosting-vm2_2.41+nmu1_all.deb. This is provided without any guarantee.

[svillemot]

Due to this issue, gandi-hosting-vm2 is now uninstallable on Debian 12 “bookworm“, since the latter no longer ships Python 2.

So this is a pretty critical issue. I’m now forced to install unsupported Python 2 binaries on my Gandi Cloud server to make it work… Or is gandi-hosting-vm2 no longer needed/recommended?

[gdchamal]

As a quick solution you can remove gandi-hosting-vm2 package before. This package is mostly needed at first boot to configure correctly the VM.

[svillemot]

My impression is that gandi-hosting-vm2 mounts the virtual disk(s), so I’m not very eager to remove it. But maybe an equivalent solution can be created using entries in /etc/fstab or .mount systemd units.