this derivation will be built:
  /nix/store/h4w7clpsrsnsxrd7b4cjrgwm0cq17d2w-bcachefs-module-7.0.0-31-generic.drv
building '/nix/store/h4w7clpsrsnsxrd7b4cjrgwm0cq17d2w-bcachefs-module-7.0.0-31-generic.drv'...