these 2 derivations will be built:
  /nix/store/3l2ppfai60l6xx4v8svhkf3zqk5f1gsg-rootfs-ubuntu-26_04.tar.drv
  /nix/store/x8ym6x5f1a4iiwckv3acdy5zc2yc3f68-container-test-ubuntu-26-04-system-checks.drv