On 4/25/22 14:16, Glenn Morris wrote:

> the
> (admittedly silly) custom type of gnus-html-image-cache-ttl is no longer
> valid. Ref: https://hydra.nixos.org/build/174776067

Thanks for pointing this out. I installed the attached patch to pacify 
the test.

The updated FIXME comment for gnus-html-image-cache-ttl suggests that a 
better approach would be for that TTL value to be a count of seconds, 
which is what TTL values normally are, and which is what I think 
gnus-html-image-cache-ttl's value would have been in the first place 
except that Emacs didn't have bignums way back when. I proposed a patch 
to do that (Bug#55117).