these 2 derivations will be built:
  /nix/store/05vm56lq0xkmld7cybcj5z9n7a5akxns-nixos-test-driver-plpgsql_check.drv
  /nix/store/4svkqhkcnhy1v6998dqfdism4hgk43hd-vm-test-run-plpgsql_check.drv