Thanks ! That helps a lot !

The command doesn't work, but the output seems to be pointing fingers at connman.
After refreshing the software list, I see this debug info three times:

It happens just after the "Refreshing software list" step.

After that, it doesn't seem to install anything, and asks me to reboot. Nothing changes after reboot though.

Connman doesn't work very well with me... I already have a big problems with it (after the first restart of the connman service, I lose Mobile Data support... and wifi never really worked, but that might not be connman's fault).

Any idea why connman is required by this command ? Or how I might bypass it ?