You can use dpkg-divert (also used by fai-divert) for diverting a file, even before it's installed I guess.
>>>>> On Fri, 10 Jan 2020 14:11:43 -0600, John G Heim <jh...@math.wisc.edu>
>>>>> said:
> Geez, what a load of bullstuff. Maybe I can add a hook to create that
> file before fai starts installing packages.
--
regards Thomas
