With regards to your Chrome issue:

1. How often did you update your Nixpkgs channel/flake input/etc? 2. What branch (nixos-XX.XX or unstable) were you using? 3. Were you using Chromium or Google Chrome?

Chrom{e,ium} gets updated pretty quickly, but depending on a lot of factors, it may take time to make it into a channel. It should really never take 2 weeks though, which is why I ask the first question.

You can also always track HEAD (or even a bump PR!) as the other commenter mentioned, though you might not want to do this if you're not using Google Chrome, as you probably don't want to build the browser ;)