this derivation will be built:
  /nix/store/rfnrplv4y4akzx7747kgqx8l7c4mgniz-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/rfnrplv4y4akzx7747kgqx8l7c4mgniz-bcachefs-module-7.0.0-39-generic.drv'...