I've been bitten twice in the past week by dependencies of my packages
dropping the Python 2 RPMs, presumably due to the Fedora 30 change.
Note that the change does state that the package should not be dropped
if other packages depend on them.
On that note, I do know how to check if other packages Require my
$ dnf repoquery --whatrequires <something_my_package_provides>
How do I check if other packages BuildRequire my package? There doesn't
seem to be a --whatbuildrequires option on dnf's repoquery.