The link appears to be in the Resolution header of PEP 632?

But yes, your analysis is correct. If/when we move distutils elsewhere, we'll probably have to update all of these sections.

Ideally we'd have a helper function to do the initial "import distutils",  handle failure (because it's not in Tools), and suppress the warning. But I don't know that there's anywhere we could put it reliably anyway, so probably just need to suppress the warnings directly and we'll handle failures if/when we move it into Tools.