apt-get install apt-source build-essential dpkg-dev vi /etc/apt/sources.list apt-get update apt-get source xen-hypervisor-4.17-amd64 vi /etc/apt/sources.list apt-get update apt-get install debuild devscripts libzstd-dev ocaml checkpolicy apt build-dep xen-hypervisor-4.14-amd64 cd xen-4.17.0+74-g3eac216e6e/ cat ../xen-addons/xen-kconfig > debian/xen-kconfig debuild -b -uc -us