Sure - demoting to universe would be the best option as then the Debian packages can come through unchanged. Another option might be to make it possible to be in main and build-depend on packages in universe, so long as you don't need them at runtime.
Sure - demoting to universe would be the best option as then the Debian packages can come through unchanged. Another option might be to make it possible to be in main and build-depend on packages in universe, so long as you don't need them at runtime.