this derivation will be built:
  /nix/store/l6k8n92zyd5k66hwrwqdipzmwgfabjjq-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/l6k8n92zyd5k66hwrwqdipzmwgfabjjq-bcachefs-module-7.0.0-39-generic.drv'...