Sorry, I haven't got my brain around the the main/universe split yet.
Seeing libvirt-daemon-driver-lxc is universe, then it's OK for libvirt to have a build-dependency on libfuse-dev, even if libfuse-dev is demoted. So you wouldn't even need to disable fuse support.
Sorry, I haven't got my brain around the the main/universe split yet. daemon- driver- lxc is universe, then it's OK for libvirt to have a build-dependency on libfuse-dev, even if libfuse-dev is demoted. So you wouldn't even need to disable fuse support.
Seeing libvirt-