these 2 derivations will be built:
  /nix/store/z35hxsn1ql44kcsybiba173iz1v5rksx-rootfs-ubuntu-26_04.tar.drv
  /nix/store/rxg21zg4r4r0qkwdla3wwrz7ra6z50jq-container-test-ubuntu-26-04-nixpkgs-flake.drv