these 2 paths will be fetched (0.0 KiB download, 82.6 KiB unpacked):
  /nix/store/5nkqnzvzgidzfvjdb3jgra263i7fn843-shadow-4.20.3-su
  /nix/store/ygg86fyk5csl5x34zipas55hmazag7kf-udev-custom-callback-0.3