these 2 derivations will be built:
  /nix/store/yd1q3ra04wnyh7l5ailasfz52r179vbr-nixos-test-driver-pgjwt.drv
  /nix/store/n6fchcvbrj334m981kl3c8vpnmzpxzhf-vm-test-run-pgjwt.drv