this derivation will be built:
  /nix/store/mvfkii79yf90rpp10kv8fl2s39skaq0w-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/mvfkii79yf90rpp10kv8fl2s39skaq0w-bcachefs-module-7.0.0-38-generic.drv'...