Update zsh usage

config/packages/alacritty/alacritty.yml

@@ -53,7 +53,3 @@ key_bindings:
     - { key: PageDown, mods: Shift, action: ScrollPageDown }
     - { key: Home, mods: Shift, action: ScrollToTop }
     - { key: End, mods: Shift, action: ScrollToBottom }
-
-shell:
-  program: /bin/zsh
-

system/shared.nix

@@ -66,12 +66,15 @@
       "flatpak"
       "wheel"
     ];
+    shell = pkgs.zsh
   };
 
   programs.steam = {
     enable = true;
     remotePlay.openFirewall = true;
   };
+  
+  programs.zsh.enable = true;
 
   fonts = {
     packages = with pkgs; [