> The Radicale Server does not and will not support the CalDAV and CardDAV standards. It supports the CalDAV and CardDAV implementations of different clients (Lightning, Evolution, Android, iPhone, iCal, and more).
Yeah, I bet. The standards are getting better, but there are so many vendor specific things that you need to support to have a good experience that just reading the standards in isolation won't help you much.
Contributing to devguide.calconnect.org on the other hand, helps everybody.
I wonder if someone has the energy to establish connectathons for "above layer 4". Most of our interoperability problems these days are virtual (thanks to brick and mortar connectathons squeeing out any of the old layer 1-4 bugs). These days we could do them online, and automate the detection of regressions.
I was actually astonished that connectathons are still running; I haven't been to one in decades: http://www.connectathon.info
