these 2 derivations will be built:
  /nix/store/7hc29k3pbsxn07qvav6vi1j62qnb7aqb-nixos-test-driver-index_advisor.drv
  /nix/store/m7ym66i6i2gn35mp12zmjxblg7qzd0bh-vm-test-run-index_advisor.drv