this derivation will be built:
  /nix/store/iybkaz9irhg2yjv6xzz7hrgl657iqv5k-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/iybkaz9irhg2yjv6xzz7hrgl657iqv5k-bcachefs-module-7.0.0-38-generic.drv'...