these 2 derivations will be built:
  /nix/store/z35hxsn1ql44kcsybiba173iz1v5rksx-rootfs-ubuntu-26_04.tar.drv
  /nix/store/kyjg0m4x67krqfm86np6qj9fkk8g8y4j-container-test-ubuntu-26-04-nix-flakes.drv