tree-wide change. seperated config from 'real' modles.

modules/home-manager/voice.nix

@@ -0,0 +1,20 @@
+{
+  config,
+  pkgs,
+  lib,
+  ...
+}: {
+  options.user.enable-speech = lib.mkEnableOption "espeak";
+
+  config = lib.mkIf config.user.enable-speech {
+    home.shellAliases = {
+      say = "espeak -p 10 -s 150 -a 200";
+    };
+    home.packages = with pkgs; [
+      espeak
+    ];
+    programs.nushell.extraConfig = ''
+      alias say = espeak -p 10 -s 150 -a 200
+    '';
+  };
+}