these 2 derivations will be built:
  /nix/store/97bdzmriwpma42far0z2mz1pdshwqadw-nixos-test-driver-pg_jsonschema.drv
  /nix/store/mfag250yj3qi3ys3isn9xvv7i35h2jp7-vm-test-run-pg_jsonschema.drv