these 2 derivations will be built:
  /nix/store/k7qwsivcc866rg5n8l36zcjpygjdfr0y-rootfs-ubuntu-26_04.tar.drv
  /nix/store/pg32452zla1hwmn91s61fksck5ahf3i7-container-test-ubuntu-26-04-empty-config.drv