Libvirt for Silverblue via sysext

Hi.

Anyone having success using libvirt as sysext with Silverblue ?

Tried the fedora/libvirtd-desktop at main · fedora-sysexts/fedora · GitHub without success - virt-manager (flatpak) is complaining about no hypervisor available. Restarting libvirt-related services won’t help.

Regards

ArtūrasB.