these 2 derivations will be built:
  /nix/store/k3kcjb1y32gk2ra78frs1j24c93qa3wa-nixos-test-driver-pgjwt.drv
  /nix/store/j70pms2s97pbqjm7dkwjpawcpzh8wn5s-vm-test-run-pgjwt.drv