this derivation will be built:
  /nix/store/qhr2np1n7yv123gwdxycwcb03b9ynk87-bcachefs-module-7.0.0-34-generic.drv
building '/nix/store/qhr2np1n7yv123gwdxycwcb03b9ynk87-bcachefs-module-7.0.0-34-generic.drv'...