this derivation will be built:
  /nix/store/m2mcyar3ksy8l005i05k857dwna30d9z-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/m2mcyar3ksy8l005i05k857dwna30d9z-bcachefs-module-7.0.0-39-generic.drv'...