Backrest on Arch / Manjaro: systemd service not configured right

I am very happy with restic and especially with Backrest, as I don’t like CLI and do prefer GUI.

My computers all run Manjaro Linux and I have installed Backrest from AUR (Arch User Repo). After having created several backups for experience purpose. I wanted to set up regular backups, following a simple rule:

Do an backup at each computer start but only once a day!

I have not found a way, to create such a scheduling when using Backrest-GUI. Maybe someone has an idea for this?

Systemd problem:
There is something more important than my scheduling: I cannot get systemd backrest.service to work.

After installation from AUR, I found the systemd Unit which had an unususal file name: backrest@.service – Maybe that it is in connection, that I am running btrfs filesystem?

Then I found, that there was no Symlink, pointing to the systemd Unit. I created one manually and started the service manually in the terminal. This lead to an error message of systemd: It refuses to accept the Unit backrest.service.

OK, I looked at the install script on Github, which creates the Unit backrest.service. There are some differencies between the Unit, I got by installing from AUR and the Unit, the Github installer would create.

So I created a new Unit by copying the code from the Github installer and then tried again. But systemd refused to accept the Unit.

What can I do, to get backrest.service / systemd to work properly?

Maybe ask where backrest issues are discussed? Here?: GitHub · Where software is built

Your issue has nothing to do with restic as I can see it.

Backrest is not provided by restic authors. It is different program which just uses restic.

Yes I admit, the request of my posting is only indirect connected with Restic. But as many people (not only me) are interested in a comfortable GUI for Restic, the add-on Backrest will contribute to the success of Restic.

Sorry, that this more systemic thinking is not welcome in this forum! – I will keep this in mid.

BTW: At first, I have tried to discuss my experience in Github but somehow I cannot login there.

In addition you provide long description without any details:) Here or on backrest github issues if you want somebody to help then provide some facts. It is you who needs help - nobody can see your screen nor guess what exactly you are doing and errors you are seeing.