this derivation will be built:
  /nix/store/mhilk8k6qm21l8czlvbiqva43jnqgk8c-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/mhilk8k6qm21l8czlvbiqva43jnqgk8c-bcachefs-module-7.0.0-39-generic.drv'...