these 2 derivations will be built:
  /nix/store/2fb1s496bj6ynmdikrw7wn26b126a8bz-nixos-test-driver-plpgsql_check.drv
  /nix/store/2570qfkdws6amzlrkg2j7512rda5k0vb-vm-test-run-plpgsql_check.drv