_: let persistant-path = "/persist/system"; in { environment = { etc = { "machine-id" = { enable = true; source = "${persistant-path}/machine-id"; mode = "symlink"; }; }; persistence."${persistant-path}" = { hideMounts = true; directories = [ "/etc/systemd/nspawn" "/root/.local/share/nix" "/var/cache/fwupd" "/var/lib/bluetooth" "/var/lib/btrfs" "/var/lib/fwupd" "/var/lib/iwd" "/var/lib/libvirt" "/var/lib/machines" "/var/lib/nixos" "/var/lib/portables" "/var/lib/systemd" "/var/log" ]; }; }; }