experimental Qubes-Whonix 13 in Qubes R3 RC1 - please test

I installed Qubes 4 because 3 had some issues on my system, 4 seems to run a lot better, so I’d like to avoid having to install Qubes 3.2.
Qubes 4 doesn’t seem to come with a whonix template installed by default, so I used the command I found on the Qubes website to install Whonix, but it can’t seem to find the packages.
Before saying that it gives the error

Failed to synchronize cache for repo ‘qubes-templates-community’, disabling.
so I think that’s the problem.

sudo rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-qubes-4.0-templates-community
sudo qubes-dom0-update --enablerepo=qubes-templates-community qubes-template-whonix-gw qubes-template-whonix-ws
sudo qubesctl state.sls qvm.sys-whonix
sudo qubesctl state.sls qvm.anon-whonix
sudo qubesctl state.highstate
qvm-prefs --set sys-whonix netvm sys-firewall

There are quite some bugs we need to work around.

The Whonix-Gateway NetVM required for updates error popup can and should be safely ignored. That is a usability bug to be ironed out soonish.

whonixcheck in whonix-gw / whonix-ws TemplateVMs does not work yet for the same reason.

Still very experimental. Anyone wanna try with the instructions from post #3 in this thread.

(Link: experimental Qubes-Whonix 13 in Qubes R3 RC1 - please test - #3)