this derivation will be built:
  /nix/store/py1wpqrbjg9slyaf8xi1g72f1fj654yw-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/py1wpqrbjg9slyaf8xi1g72f1fj654yw-bcachefs-module-7.0.0-38-generic.drv'...