I’m well aware of the issue, that’s why I created an issue to design a new API to replace the removed API. A limiation of the old API is that it didn’t give access to all of the 66 PyConfig members, but only around 20 members. Also, it was hard to keep them consistent, since nothing prevents setting a global variables after Python initialization.
I also have concerns about consistency between PyConfig and sys attributes. That’s why I’m interested by PEP 726: Module __setattr__ and __delattr__: see PEP 726: Module __setattr__ and __delattr__ - #22 by vstinner discussion.