When using zest.releaser to release non python egg, pyroma should not be proposed.
check-manifest had the same issue, which Marius fixed today: https://github.com/mgedmin/check-manifest/issues/9
In short: you can use zest.releaser also to release non-python packages, for example buildouts, and it would be nice if pyroma did not ask a question then.
Untested, but it should be as easy as adding these lines at the top of the
main_files = os.listdir(data['workingdir']) if 'setup.py' not in main_files and 'setup.cfg' not in main_files: return