System restore tool for Linux. Creates filesystem snapshots using rsync+hardlinks, or BTRFS snapshots. Supports scheduled snapshots, multiple backup levels, and exclude filters. Snapshots can be restored while system is running or from Live CD/USB.
Would this work with BTRFS snapshots? Or just rsync? If using snapshots, it’s kind of defeats the purpose of flatpaking it, as you would end up giving it full system access to do anything.