this derivation will be built:
  /nix/store/hn77bl8017qnjrcv1wcnyzqpa4xrgxa2-bcachefs-module-7.0.0-27-generic.drv
building '/nix/store/hn77bl8017qnjrcv1wcnyzqpa4xrgxa2-bcachefs-module-7.0.0-27-generic.drv'...