I just checked installation of qemu-kvm & libvirt & virt-install on a Fedora Server Edition, that is a headless server. It installed 338 packages / 158 mb including poppler, mesa, wayland, libX11, gtk3, cairo and a lot of additional graphic related software.
I’m wondering, why I need Wayland or X11 etc for kernel virtualization and running virtual machines? It turns my headless server into a graphical workstation. It installs software that I don't need for running a headless server, and don't want there.
If I install the same combo on a Debian / Ubuntu headless Server it installs about 40 packages / 20 mb. I know, the packages are not the same, but Debian/Ubunt doesn’t need X11, poppler, mesa, etc. for virtualization on a headless server. Can't we do the same?