[Mailman-Users] Mailman3 - from Whoosh to Xapian

Kimmo L. writes:

import xapian

ModuleNotFoundError: No module named 'xapian'

I'm pretty sure this occurs when the Xapian application and its libraries are not installed. xapian-haystack is an adapter from C++ (or maybe C) to Python, it is not a complete installation of the Xapian package. See Requirements at

https://pypi.org/project/xapian-haystack/

Have you installed Xapian itself? If you have and still no luck, let us know. I know that many sites have successfully installed Xapian as the indexer for their Mailman instance.

Steve