this derivation will be built:
  /nix/store/mvj3gxz9z05c0si265kwq1fismxwz1y0-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/mvj3gxz9z05c0si265kwq1fismxwz1y0-bcachefs-module-7.0.0-39-generic.drv'...