this derivation will be built:
  /nix/store/v4ri9n88c801xqwqvwvblh597m3wr5id-bcachefs-module-7.0.0-29-generic.drv
building '/nix/store/v4ri9n88c801xqwqvwvblh597m3wr5id-bcachefs-module-7.0.0-29-generic.drv'...