this derivation will be built:
  /nix/store/1xji82nixfb3znibqmkz42d57lr9g6qf-bcachefs-module-7.0.0-29-generic.drv
building '/nix/store/1xji82nixfb3znibqmkz42d57lr9g6qf-bcachefs-module-7.0.0-29-generic.drv'...