Maybe maintain a shared packaging branch
If all the corresponding packaging directories are nigh-on identical (e.g. all debian/
subdirectories in the relevant branches), then we might want to maintain a packaging only branch that has the universal packaging in and merge from there into the relevant branches.
That way any packaging work/fixes go into a single place, only distro specific work happens directly on the distro branches.
When done, we probably want to make a similar change in other packaging repos.