these 2 derivations will be built:
  /nix/store/zck12n59n6wamydszy0g3k1l59mwmwi0-nixos-test-driver-plpgsql_check.drv
  /nix/store/9yrayn19s838l16jf7hzv8ks5h42zc2m-vm-test-run-plpgsql_check.drv