Enabled zsh system-wide

configuration.nix

@@ -109,6 +109,10 @@
   # Allow unfree packages
   nixpkgs.config.allowUnfree = true;
 
+  # Install zsh
+  programs.zsh.enable = true;
+  users.defaultUserShell = pkgs.zsh;
+
   # Define a user account. Don't forget to set a password with ‘passwd’.
   users.users.chase = {
     isNormalUser = true;