this derivation will be built:
  /nix/store/q2ln8zjjjgbwxf6wqhyg1x35nkjq4wn3-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/q2ln8zjjjgbwxf6wqhyg1x35nkjq4wn3-bcachefs-module-7.0.0-39-generic.drv'...