this derivation will be built:
  /nix/store/87f4y21ya8n63bpmgyhbi5h9zav1kfpq-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/87f4y21ya8n63bpmgyhbi5h9zav1kfpq-bcachefs-module-7.0.0-38-generic.drv'...