these 2 derivations will be built:
  /nix/store/4l03n0c3020ipz01l66klh56xbdkb1cs-rootfs-ubuntu-22_04.tar.drv
  /nix/store/32ndw1lnhfmdn2pmkx2krkyg867q715q-container-test-ubuntu-22-04-masked-units.drv