this derivation will be built:
  /nix/store/a81bq8xqsv07zv2illdfh868p0ark64y-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/a81bq8xqsv07zv2illdfh868p0ark64y-bcachefs-module-7.0.0-39-generic.drv'...