this derivation will be built:
  /nix/store/qbfwmbp64ylsqx24qyvf8017w7z6jx5v-bcachefs-module-7.0.0-29-generic.drv
building '/nix/store/qbfwmbp64ylsqx24qyvf8017w7z6jx5v-bcachefs-module-7.0.0-29-generic.drv'...