I use the PWA so there’s no issue
I use omnivore, not exactly what you want but it’s great, and doubles as an RSS and newsletter reader
You could try postmarketOS
The old version will still be available under whatever license it was released with
Check out https://toys.whereis.みんな and nonguix which have a ton of proprietary stuff, and the tools in nonguix make it simple to package binaries for personal install if you want something quickly
Hey, if you’re talking about Nix, Guix is a similar niche and I’ve had a great experience with the folks in the IRC chat and mailing list. Do try it out.
if you use fish you can tab-cycle tour way to the file