these 2 derivations will be built:
  /nix/store/3r37x7i0c9mh3iqj1brprkykpghkfphg-nixos-test-driver-index_advisor.drv
  /nix/store/qvvc04jy1l7pc29vz8zcmjvprq8yfxfp-vm-test-run-index_advisor.drv