{ ... }: { services.snapper = { configs = { home = { SUBVOLUME = "/home"; ALLOW_USERS = [ "rouven" ]; TIMELINE_CREATE = true; TIMELINE_CLEANUP = true; }; lib = { SUBVOLUME = "/var/lib"; ALLOW_USERS = [ "rouven" ]; TIMELINE_CREATE = true; TIMELINE_CLEANUP = true; }; }; }; }