New Services in Systemd on Debian

[Mark Fletcher <mark27q1@gmail.com>]

Hi there

If one wants to create a new systemd service on Buster, for example for 
some home-grown unit, where would be the right place to put the .service 
file? Candidates are obviously /lib/systemd/system or 
/etc/systemd/system but in both cases that would mean dropping files in 
places that really ought to be left to package management (or at least I 
can see an argument for that). Is there a better / safer / 
less-likely-to-be-missed-in-a-backup place to put them?

If not I'll probably create a package for the .service file and make it 
dependent on some systemd package as well as the package containing the 
thing I want to create the service for, but that seems a bit of a fiddle 
for one .service file...

Thanks

Mark