https://www.whonix.org/wiki/Dev/Installation_from_Repository
discussion:
'sudo apt-get install whonix-(gateway|workstation)' feature
https://groups.google.com/forum/#!msg/qubes-devel/3-BC87cbWVk/Xby-YeqUBwAJ
TODO:
- Requires making Whonix build and work without several chroot scripts. Reimplementing them in postinst or otherwise.
- Handle whonixcheck Whonix News without build version file somehow or have somehow a build version file created.