this derivation will be built:
  /nix/store/4cgq9hgxbfax785jpjp1zyjada8kqyn1-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/4cgq9hgxbfax785jpjp1zyjada8kqyn1-bcachefs-module-7.0.0-38-generic.drv'...