remove useless module

hosts/common/common.nix

@@ -11,6 +11,8 @@
       ../../modules/nix/nh.nix
     ];
 
+  smayzy.virt.enable = true;
+
   users.users.smayzy = {
     isNormalUser = true;
     description = "smayzy";

modules/home-manager/firefox.nix

@@ -1,41 +0,0 @@
-{ config, pkgs, inputs, ... }:
-
-{
-  programs.firefox = {
-    enable = true;
-    profiles.smayzy = {
-    
-      settings = {
-        "browser.bookmarks_restore_default_bookmarks" = false;
-	"browser.contentblocking.category" = "standard";
-	"sidebar.verticalTabs" = true;
-        "browser.startup.homepage" = "https://search.brave.com";
-	"ui.systemUsesDarkTheme" = "1";
-	"layout.css.prefers-color-scheme.content-override" = "2";
-	"general.autoScroll" = true;
-	"extensions.getAddons.showPane" = false;
-	"extensions.htmlaboutaddons.recommendations.enabled" = false;
-	"browser.newtabpage.activity-stream.showSponsored" = false;
-	"browser.newtabpage.activity-stream.showSponsoredTopSites" = false;
-	"browser.newtabpage.activity-stream.system.showSponsored" = false;
-	"browser.newtabpage.activity-stream.asrouter.userprefs.cfr.addons" = false;
-	"browser.newtabpage.activity-stream.asrouter.userprefs.cfr.features" = false;
-	"sidebar.main.tools" = "syncedtabs,history,bookmarks";
-	"datareporting.healthreport.uploadEnabled" = false;
-	"extensions.formautofill.addresses.enabled" = false;
-	"extensions.formautofill.creditCards.enabled" = false;
-	"app.shield.optoutstudies.enabled" = false;
-	"toolkit.telemetry.unified" = false;
-	"toolkit.telemetry.archive.enabled" = false;
-	"toolkit.telemetry.enabled" = false;
-	"signon.rememberSignons" = false;
-	};
-
-      extensions.packages = with inputs.firefox-addons.packages."x86_64-linux"; [
-	darkreader
-	ublock-origin
-	bitwarden
-      ];
-    };
-  };
-}

modules/nix/virt.nix

@@ -1,10 +1,20 @@
 { config, lib, pkgs, ... }:
+let
+  inherit (lib) mkIf mkOption types;
+in
 {
+  options.smayzy.virt.enable = mkOption {
+    type = types.bool;
+    default = false;
+    description = "enable virt-manager and qemu";
+  };
+
+  config = mkIf config.smayzy.virt.enable {
     programs.virt-manager.enable = true;
     users.groups.libvirtd.members = ["smayzy"];
     virtualisation.libvirtd.enable = true;
-
     environment.systemPackages = with pkgs; [
     qemu
     ];
+  };
 }