these 2 derivations will be built:
  /nix/store/a13vbhpk2f59s90qz345hxf5a4mf7k2g-test-script.py.drv
  /nix/store/hr5xynbx37k8rp1qws35vr2ylnjsrnck-container-test-debian-13-nixpkgs-flake.drv