these 5 derivations will be built:
  /nix/store/4ngffmxl800xjvwlciyq4c2n7inkixqf-closure-info.drv
  /nix/store/dhq8vpcgr2bv70fnkxs9w33xfh2r5rmw-efi-directory.drv
  /nix/store/pgz190gmjgz9f0p87fj7jgp633makjkg-efi-image_eltorito.drv
  /nix/store/wqa90n3ry70iy1d3wrn4mv9l9bqkjqpz-isolinux.cfg.drv
  /nix/store/z6hqwxl93s4nnw6k7yz2pxy5c3f14a68-spaces-os.iso.drv