Backups: Implementing Zstandard compression instead of Gzip?

Running into issue again with non compressed backup taking huge amount of space on a very limited storage space…
Some apps can no longer be backed up in fact, because it takes around 25GB (around 5 compressed) and I have only 15 left (and can’t expand, and nevertheless it’s costly).

Is there any update on this ? YunoHost 4.1 release / Sortie de YunoHost 4.1 - #15 by Maniack_Crudelis

Is the bug with the compression setting fixed ? :thinking:

How could we help to implement a single-backup option to compress it ?
What should we look for/adapt/be aware of ?