Just want to mention that we do have this nice website to look at, although I am not sure how up to date it is:

https://www.wheelodex.org/projects/sortedcontainers/rdepends/?page=1

On 11 Nov 2021, at 19:20, Antoine Pitrou <antoine@python.org> wrote:

Unfortunately, PyPI doesn't seem to offer a way to query the reverse
dependencies of a package, otherwise we could know how many packages
depend on the "sortedcontainers" package.