this derivation will be built:
  /nix/store/1rkvh2f8y15n8kpp0hq4dms8f5nx7550-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/1rkvh2f8y15n8kpp0hq4dms8f5nx7550-bcachefs-module-7.0.0-39-generic.drv'...