stu@spacehopper.org (Stuart Henderson), 2025.12.06 (Sat) 17:12 (CET):
> On 2025/12/06 16:06, Stuart Henderson wrote:
> > my (trivial) use of vdirsyncer is still working.
> > 
> > can you try reverting to older py3-aiohttp without touching anything
> > else to confirm that this is indeed the source of the problem?

For the archives: this worked.

> there is a newer vdirsyncer release, but I don't think it will change
> anything:

But it did :-)

With these packages:
py3-aiohttp-3.13.2
vdirsyncer-0.20.0

vdirsyncer did its job without complaints. 

Then, full of doubt, I reverted to the older rsyncer-0.19.3p0 and the
problem re-appeared. 

Thanks for the update to vdirsyncer-0.20.0, which solved my problem.

Marcus