Kiwix

Why not just symlink to /usr/bin?

Not familiar with NixOS

Bash (and other shells) have readline support which sounds similar to what you want?

I had this with the Sims, I bought and paid for the game legit but trying to run it through steam it kept trying to load the origin store for auth or something which was a pain in the ass and I couldn’t get it to run reliably.

I ended up using a crack just because it ran without any BS!

Most of the time indie games actually do run on Linux, it’s the games from big studios that don’t (in my experience)

Gentoo has overlays which are similar to AUR, I haven’t felt like I’m missing packages compared to when I ran arch