these 2 derivations will be built:
  /nix/store/a8b1nz1j58lyjqby79ri038v9g10cb8w-nixos-test-driver-pg_partman.drv
  /nix/store/pq56ib6zxh04b634r2jyr0kijzic4a2r-vm-test-run-pg_partman.drv