Vagrant LibVirt - New virtual machine in 20 seconds
Create a new virtual machine in 20 seconds. Install only packages from official, main Debian repositories. Does not need VirtualBox or NFS.
Short version for gurus: apt-get install vagrant vagrant-libvirt. Use vagrant normally, but disable NFS with config.vm.synced_folder ".", "/vagrant", disabled: true.
The rest of us can read on for full background and tutorial...