Currently trying out NixOS, just switched from Gentoo. Interesting experience so far, will see if the switch will be permanent.

Immutable system, completely separated and well-defined development environments per project, and overall nix is pretty nice.

Why should that be part of lemmy? If you really wanted such feature it should be independent something like plugin into your browser. Same way as you would use plugins for things like spell checking.

Probably Minecraft or LoL. But it has been a long time since I played them. Nowadays, I mainly just play indie roguelikes.