these 2 derivations will be built:
  /nix/store/y0aq6l1mlz6m4ihdwi368vgixnym46ys-rootfs-ubuntu-26_04.drv
  /nix/store/wdc4b9hm16s2h91zl6f87wphhm9p7ma8-container-test-ubuntu-26-04-user-packages.drv