There are two ways to upgrade a template to a new Debian release:
Recommended:Install a fresh template to replace the existing one. This option is simpler for less experienced users, but it won’t preserve any modifications you’ve made to your template. After you install the new template, you’ll have to redo your desired template modifications (if any) and switch everything that was set to the old template to the new template. If you choose to modify your template, you may wish to write those modifications down so that you remember what to redo on each fresh install. In the old Debian template, see /var/log/dpkg.log and /var/log/apt/history.log for logs of package manager actions.
qvm-template: error: Template 'debian-13-xfce' not found.
Which might explain why template manager doesn’t show it; but why can’t it be found by command line?
Apparently qvm-template throws a “usage” message when you ask for a template it doesn’t know about. Which seems inappropriate to me; the command syntax is legit.
The whonix-18 templates are going to be switching to Debian-13 with LXQt
desktop environment. I value UX consistency between my whonix-18 qubes
and debian-13 qubes. So, which template should I download? I am
thinking debian-13-xfce shouldn’t be the one I use. What desktop
environment is the debian-13 shipped with? Gnome? (yuck!)
Is there going to be qubes-os-specific buttons on the LXQt file manager
(PCManFM) as well (right click options such as Move to qube or Open in qube, etc)? If not by default, how can one get them to LXQt desktop environment?
Why don’t just install xfce on whonix? Afaik they’re switching for wayland which I suspect you don’t have on xfce qubes (unless you’re running testing system)
I don’t want to go against the upstream whonix, and I want to stay with
their system config. I don’t want to mess with the whonix template so
much as it has lots of moving parts and configurations that work
together in various ways (that are mostly invisible to me).
Instead, I want to get the debian-13 with LXQt as well, so that I have
some UX parity between these two templates.
Also, can somebody answer my original question: what
desktop-environment-specific packages does debian-13 come with? With debian-13-xfce, it is in the name. But debian-13 itself is ambiguous.
As far as I’m aware the regular “debian” or “fedora” are by default GNOME. And there’s a package you can download (and a plugin for Thunar?) that’ll add the move/copy-to feature. But that should come by default with anything but minimal.
And it couldn’t hurt to just download debian-13 and see. Let the download take place in the background, boot it up, if you don’t like it, delete it.
debian-13-xfce → Of course XFCE debian-13 → GNOME DE debian-13-minimal → Just xterm and some minimal GUI tools. Feel free to clone it and install morph it to LXQt
Before asking why not shipping a pre-built LXQt, KDE, … flavor of the Debain or Fedora, the ultimate answer is for Qubes OS team to answer. But I believe a limitation of available resources, build infra, time, …