this derivation will be built:
  /nix/store/y820x7xb9r6gdax6kz5a356ddjyk93jz-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/y820x7xb9r6gdax6kz5a356ddjyk93jz-bcachefs-module-7.0.0-39-generic.drv'...