I love virtualization in Linux and I would like to have operating system which will work only as minimal, air-gapped as much is possible host for my guest operating systems. Qubes OS project really interested me but it's based on Xen hypervisor so it might cause troubles with GPU Passthrough which is really important for me also I'm more interested in KVM. In my case it's not only about security and privacy but also about fun and learning. What can you recommend? I think that good choice might be Gentoo Linux because it allows for minimal installation and remove unnecessary software like CUPS, Bluetooth entirely with flags which will be great option for host only OS. But I had experience with Gentoo and it's not easiest way 😅 Debian might be easier option but I will have less control over my system. Maybe you have other interesting options?