these 5 derivations will be built:
  /nix/store/5x8awmb98irkiqkcim54cam8f47vscda-closure-info.drv
  /nix/store/w84qm8wzs52dhixvmrlcc36bpk7w9x7a-efi-directory.drv
  /nix/store/n8qxjglpmn9vvpvwiii5zxp5mb9f36b3-efi-image_eltorito.drv
  /nix/store/rjv44i0p6cd7rdsdfjdz7x7440c8rdwr-isolinux.cfg.drv
  /nix/store/aypzznk0cd2pclwjhqnbxag623cqzb5q-spaces-os.iso.drv