this derivation will be built:
  /nix/store/940nwg8dnyzj433hb6lzyq9hlzc2cdj3-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/940nwg8dnyzj433hb6lzyq9hlzc2cdj3-bcachefs-module-7.0.0-39-generic.drv'...