fix

modules/system/boot/uefi.nix

@@ -0,0 +1,20 @@
+{
+  lib,
+  config,
+  ...
+}:
+let
+  cfg = config.my.system.boot.uefi;
+in
+{
+  options.my.system.boot.uefi = {
+    enable = lib.mkEnableOption "UEFI boot support";
+  };
+
+  config = lib.mkIf cfg.enable {
+    boot.loader = {
+      systemd-boot.enable = lib.mkDefault true;
+      efi.canTouchEfiVariables = lib.mkDefault true;
+    };
+  };
+}