From 0bd3a0ed81a184f5c97625f68ac72a1ecd9aed43 Mon Sep 17 00:00:00 2001
From: Sergei Poljanski <me@asxp.io>
Date: Tue, 20 Oct 2026 12:10:06 +0400
Subject: [PATCH] desktop: add an xfce-x11 boot specialisation

A second boot entry with Xfce on Xorg via LightDM, matching the
desktop where another.im's typing jitter shows up (2026-10-19), to
reproduce it here. GDM in GNOME 50 no longer starts Xorg sessions,
hence LightDM. The default entry is untouched.

Assisted-by: Claude:opus-5-5
---
 configuration.nix         |  1 +
 modules/xfce-x11-test.nix | 19 +++++++++++++++++++
 2 files changed, 20 insertions(+)
 create mode 100644 modules/xfce-x11-test.nix

diff --git a/configuration.nix b/configuration.nix
index 635b901..4d42a46 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -22,6 +22,7 @@
     ./modules/lemonade.nix
     ./modules/gaming.nix
     ./modules/litecoin.nix
+    ./modules/xfce-x11-test.nix
     # ./modules/hostel-wifi.nix  # disabled 2026-05-08 — re-enable when needed
   ];
 
diff --git a/modules/xfce-x11-test.nix b/modules/xfce-x11-test.nix
new file mode 100644
index 0000000..b3e81b0
--- /dev/null
+++ b/modules/xfce-x11-test.nix
@@ -0,0 +1,19 @@
+# A second boot entry, "xfce-x11", that looks like hx26's desktop for the
+# another.im typing-jitter bug (2026-10-19): Xfce on Xorg with xfwm4
+# compositing, logged in through LightDM. Only the display manager and the
+# session differ from the default entry; GNOME stays installed, so the
+# normal boot is untouched. Pick the entry in the boot menu.
+{ lib, ... }:
+
+{
+  specialisation.xfce-x11.configuration = {
+    system.nixos.tags = [ "xfce-x11" ];
+
+    # GDM in GNOME 50 no longer starts Xorg sessions.
+    services.displayManager.gdm.enable = lib.mkForce false;
+    services.xserver.displayManager.lightdm.enable = true;
+
+    services.xserver.desktopManager.xfce.enable = true;
+    services.displayManager.defaultSession = lib.mkForce "xfce";
+  };
+}