flakes: Migrate the config and miku to flakes

modules/programs/firefox/default.nix

@@ -1,9 +1,15 @@
-{ config, pkgs, ... }:
+{ inputs, config, lib, pkgs, ... }:
 
-{
-  config = {
+let
+  cfg = config.ptw.programs.firefox;
+in {
+  options.ptw.programs.firefox = {
+    enable = lib.mkEnableOption "Configure Firefox using HomeManager";
+  };
+ 
+  config = lib.mkIf cfg.enable {
     environment = {
-      systemPackages = with pkgs; [ unstable.firefox-wayland tor-browser-bundle-bin ];
+      systemPackages = with pkgs; [ firefox-wayland tor-browser-bundle-bin ];
 
       # Deploy a Firefox policy to set the search engine and do some other things
       etc."firefox/policies/policies.json".source = ./policies.json;
@@ -16,7 +22,7 @@
       };
     };
     
-    home-manager.users."${config.system.singleUser}".programs.firefox = {
+    home-manager.users."${config.ptw.system.singleUser}".programs.firefox = {
       enable = true;
       extensions = with pkgs.nur.repos.rycee.firefox-addons; [
         https-everywhere