these 2 derivations will be built:
  /nix/store/9r6j3ywmizcyg9ads99qn4bva5rclw44-nixos-test-driver-hypopg.drv
  /nix/store/ag30c8xyk7xagqr5b19l77jfq7m8ygyf-vm-test-run-hypopg.drv