these 2 derivations will be built:
  /nix/store/4jzwyjywm8gp0nlx6i077x7xp8w1m0ha-nixos-test-driver-index_advisor.drv
  /nix/store/9l2jszba51870msn7yk6pkq4i607zq05-vm-test-run-index_advisor.drv