I'm running into a couple networking issues which I suspect could be related to SSL/TLS, but I'm not sure how to go about confirming that that's the case.
The main problem I'm having is I'm unable to fetch gem dependencies from rubygems.org (e.g. using Bundler).
One reason I suspect this could be SSL-related is that at about the same time, I also started experiencing very slow connection initialization when using weechat to connect to freenode. It tends to time out on the first connection attempt, though it retries and eventually succeeds.
I'm running NixOS 18.03, with Gnome. I dug around a little with
journalctl -k but didn't see anything while attempting to fetch from rubygems.