these 2 derivations will be built:
  /nix/store/2dz8kwmhvcwih9crhzwk75yvq5adhkf6-nixos-test-driver-pg_jsonschema.drv
  /nix/store/7qsbly0668rxm3jqpkagpqp1z60w5zl3-vm-test-run-pg_jsonschema.drv