this derivation will be built:
  /nix/store/i81bdr9l9kf0k1d8m03g4ln5gn5ax60l-bcachefs-module-7.0.0-34-generic.drv
building '/nix/store/i81bdr9l9kf0k1d8m03g4ln5gn5ax60l-bcachefs-module-7.0.0-34-generic.drv'...