building Nix...
building the system configuration...
these derivations will be built:
  /nix/store/6bsq35hsjgxqra7csb9yx6947ckp195i-grub-config.xml.drv
  /nix/store/car2nqyjig9zjwbfw9zniz6m0gzmv4v1-install-grub.sh.drv
  /nix/store/hnln1i49yapqk080gj0wh2h7zjlx1j6x-nixos-system-nixosPC-18.09.1822.0a8f35c998f.drv
building '/nix/store/6bsq35hsjgxqra7csb9yx6947ckp195i-grub-config.xml.drv'...
building '/nix/store/car2nqyjig9zjwbfw9zniz6m0gzmv4v1-install-grub.sh.drv'...
building '/nix/store/hnln1i49yapqk080gj0wh2h7zjlx1j6x-nixos-system-nixosPC-18.09.1822.0a8f35c998f.drv'...
updating GRUB 2 menu...
/nix/store/a9i0a06gcs8w9fj9nghsl0b6vvqpzpi4-bash-4.4-p23/bin/bash: /etc/grub.d/30_os-prober: No such file or directory
NOT restarting the following changed units: systemd-fsck@dev-disk-by\x2duuid-CF75\x2dE0ED.service
activating the configuration...
setting up /etc...
reloading user units for sddm...
reloading user units for artur...
setting up tmpfiles
reloading the following units: dbus.service
restarting the following units: polkit.service