these 4 derivations will be built:
  /nix/store/iv24niib6a05j7z7z8spy8pjwj6d4f7v-test-script.drv
  /nix/store/n6s61lllgyff2m41qzvwmyh70qvhybz9-driverConfiguration.json.drv
  /nix/store/075mk5wz8is8640kmhkvzxprmx4x204p-nixos-test-driver-wrappers-regression-PSQL-1387.drv
  /nix/store/gkpk79fxjma8jqcm7abl5zl9441askdn-vm-test-run-wrappers-regression-PSQL-1387.drv