Seriously, I consider a programming language mature when projects written in that language stop feeling the need to stress that. I mean, for some time projects listed "written in rust" (or "written in go", etc) as the main feature. Now rust is more normalized, finally.

I wonder if there is an overlap in the Rust and Arch Linux community then :D

From personal/professional experience this is true. Your typical rust developer uses Arch and Neovim. Yes, he will tell you about both.

NixOS and helix!

And has a github repo with dotfiles

I'm sure one of them will comment here and tell you. Just as soon as they fix their wifi driver, and oh shit the bluetooth is broken too, okay time to open up the local copy of the arch wiki..

Definitely. Pacman and ALPM are currently being rewritten in Rust.