 
            Andreas Vetter writes:
It seems to me cmarkgfm is broken today. I tried to update it in my working environment and get the same error:
(venv) mailman@lists:~> pip install -U cmarkgfm Requirement already satisfied: cmarkgfm in ./venv/lib64/python3.11/site- packages (2024.11.20) Collecting cmarkgfm Using cached cmarkgfm-2025.10.20.tar.gz (145 kB) Installing build dependencies ... done Getting requirements to build wheel ... error error: subprocess-exited-with-error
Thanks for the report, Andreas. That's very helpful. I'm assuming your "cached cmarkgfm-2025.10.20.tar.gz" was installed into a working Mailman system (specifically mailman-web). No confirmation needed, only if I'm mistaken.
-- GNU Mailman consultant (installation, migration, customization) Sirius Open Source https://www.siriusopensource.com/ Software systems consulting in Europe, North America, and Japan