these 4 derivations will be built:
  /nix/store/hwikw7a6and4nrimgz7s8vgdlig207lw-test-script.drv
  /nix/store/xwzg0dxkdqyzq9mq53sy2xs3bqviq5av-driverConfiguration.json.drv
  /nix/store/palc9xnqnzmvl8k570dsqhz8hxyfg1wp-nixos-test-driver-pg_jsonschema.drv
  /nix/store/ghsnaqm65zl2746v74pdca8b74jvh6ii-vm-test-run-pg_jsonschema.drv