anchor.diff:  
           qemu-img create -b ./${image.rootDisk} -F "$image_type" -f qcow2 ./disk.qcow2
   
  +        extra_qemu_opts=
  +
  +        # Add the config disk, required by the Ubuntu images.
  +        config_drive=$(echo *configdrive.vmdk || true)
  +        if [[ -n $config_drive ]]; then
  +          extra_qemu_opts+=" -drive id=disk2,file=$config_drive,if=virtio"
  +        fi
  +
           echo "Starting qemu..."
           qemu-kvm -m 4096 -nographic \
             -drive id=disk1,file=./disk.qcow2,if=virtio \
  -          -netdev user,id=net0,restrict=yes,hostfwd=tcp::20022-:22 -device virtio-net-pci,netdev=net0 &
  +          -netdev user,id=net0,restrict=yes,hostfwd=tcp::20022-:22 -device virtio-net-pci,netdev=net0 \
  +          $extra_qemu_opts &
           qemu_pid=$!
           trap "kill $qemu_pid" EXIT
   
  
positive.code:         binaryTarball = binaryTarballs.${system};
        }
        ''
          echo "Unpacking Vagrant box $image..."
          tar xvf $image
  
  
negative.code: {
    ubuntu-14-04.install-default = makeTest "ubuntu-14-04" "install-default";
    #ubuntu-16-04.install-default = makeTest "ubuntu-16-04" "install-default";
    ubuntu-22-10.install-default = makeTest "ubuntu-22-10" "install-default";
    ubuntu-22-10.install-force-daemon = makeTest "ubuntu-22-10" "install-force-daemon";
    fedora-36.install-default = makeTest "fedora-36" "install-default";
    fedora-36.install-force-daemon = makeTest "fedora-36" "install-force-daemon";
  }
  