From 1e4221b0e27e8b468173d837ee3f30fffa981b79 Mon Sep 17 00:00:00 2001
From: FliegendeWurst <arne.keller@posteo.de>
Date: Wed, 8 Jan 2025 12:32:19 +0100
Subject: [PATCH] nixos/sway: warn on too old Nvidia

---
 nixos/modules/programs/wayland/sway.nix | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/nixos/modules/programs/wayland/sway.nix b/nixos/modules/programs/wayland/sway.nix
index 74fc216569e5..6f2bb5c2fba0 100644
--- a/nixos/modules/programs/wayland/sway.nix
+++ b/nixos/modules/programs/wayland/sway.nix
@@ -113,6 +113,19 @@ in
         }
       ];
 
+      warnings =
+          lib.mkIf
+            (
+              (lib.elem "nvidia" config.services.xserver.videoDrivers)
+              && !config.hardware.nvidia.open
+              && (lib.versionOlder "551" (
+                lib.versions.major (lib.getVersion config.hardware.nvidia.package)
+              ))
+            )
+            [
+              "Using Sway with Nvidia driver version <= 550 may result in a broken system. Configure hardware.nvidia.package to use a newer version."
+            ];
+
       environment = {
         systemPackages = lib.optional (cfg.package != null) cfg.package ++ cfg.extraPackages;