this derivation will be built:
  /nix/store/za3yadg9glr0a73zgxr3gc41wggk6wvp-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/za3yadg9glr0a73zgxr3gc41wggk6wvp-bcachefs-module-7.0.0-38-generic.drv'...