I occasionally run the IWYU report (docker-compose run iwyu) to clean up includes and I notice that the codebase could really use some love in this department
https://gist.github.com/wesm/af59c7cc8f35c6fd806b0d041b816da8 Some of our IWYU filter settings are a little bit off, so I don't think everything can be 100% fixed, but there's a lot of stuff that would be good to clean up. I'm going to clean up all the Parquet-related includes as part of a patch I'm working on, but I encourage other C++ developers to make this report part of your development workflow to keep things tidy. Someday when we have more maintainer bandwidth we might introduce this as part of our CI (nightly or otherwise) but I don't think we can justify the effort right now. - Wes
