this derivation will be built:
  /nix/store/kh3635sc6lw4nac924bdn73b6xndjq04-bcachefs-module-7.0.0-34-generic.drv
building '/nix/store/kh3635sc6lw4nac924bdn73b6xndjq04-bcachefs-module-7.0.0-34-generic.drv'...