[Rust] Moves cargo env to rust file [Nix] small cleanups [Terminal] Removes special Alacritty TERM override

home-manager/features/shell.nix

@@ -30,7 +30,6 @@
   programs.zsh = {
     enable = true;
     envExtra = ''
-      . "$HOME/.cargo/env"
       PATH=$PATH:$HOME/.local/bin
       GITHUB_USERNAME=periodic
     '';