Uses chroot to pretend for restic that the latest snapshot is actually the whole filesystem.
Restic can then create its backup snapshot in peace while the live file system can change without any conflicts.
All orchestrated by systemd timer and service unit.

Sounds pretty neat! Could perhaps learn something for my own backup solution.

a simple named pipe management utility.

Really nice utility which creates ad-hoc named pipes for you which you can then use later. The Readme explains it well.
Can honestly have so many uses, it's staggering but I think it is one of those programs you forget about until you really really need it.