As for help, now I'm good because I managed to send patches
correctly-ish. I'll probably end up looking for another email provider.
The issue that needs to be addressed however is the documentation, this
page to be precise:
https://guix.gnu.org/en/manual/devel/en/html_node/Sending-a-Patch-Series.html
I propose turning it into numbered list of things a contributors needs
to do in order to successfully sending 1) a single patch or 2) a patch
series, with clearly visible headers. Then as I mentioned in the
previous reply, sections such as "Canceling Issue", "Adding More
Patches", "Updating/Changing the Patch Series" and "Troubleshooting"
should be added. This should make the guide easier to follow and more
friendly. The "Troubleshooting" section should cover typical
mistakes/errors and mention the issue we were having.
That way possible contributors will at least have a hint what could be
wrong with their setup, which should limit the level of frustration.
You could also add "make sure to ask on the IRC or mailing list first
if you can't resolve the issue".
That should do.