these 2 derivations will be built:
  /nix/store/pl7gqvgvzwfblqkarscxipkf9fb59dyi-nixos-test-driver-pgjwt.drv
  /nix/store/yvxpklsk654cziylih232g0g4zak34rj-vm-test-run-pgjwt.drv