[nvidia] Attempts to fix flicker

Switch to nouveau

nixos/modules/desktop/sway/default.nix

@@ -38,6 +38,26 @@ let
       export XDG_DATA_DIRS=${datadir}:$XDG_DATA_DIRS
       gnome_schema=org.gnome.desktop.interface
       # gsettings set $gnome_schema gtk-theme 'Dracula'
+
+      # https://github.com/crispyricepc/sway-nvidia/blob/2101a18698151a61266740f1297158119bf660ac/wlroots-env-nvidia.sh
+      # Hardware cursors not yet working on wlroots
+      export WLR_NO_HARDWARE_CURSORS=1
+      # Set wlroots renderer to Vulkan to avoid flickering
+      export WLR_RENDERER=vulkan
+      # General wayland environment variables
+      export XDG_SESSION_TYPE=wayland
+      export QT_QPA_PLATFORM=wayland
+      export QT_WAYLAND_DISABLE_WINDOWDECORATION=1
+      # Firefox wayland environment variable
+      export MOZ_ENABLE_WAYLAND=1
+      export MOZ_USE_XINPUT2=1
+      # OpenGL Variables
+      export GBM_BACKEND=nvidia-drm
+      export __GL_GSYNC_ALLOWED=0
+      export __GL_VRR_ALLOWED=0
+      export __GLX_VENDOR_LIBRARY_NAME=nvidia
+      # Xwayland compatibility
+      export XWAYLAND_NO_GLAMOR=1
     '';
   };
 in {
@@ -100,14 +120,17 @@ in {
 
       power-profiles-daemon.enable = true;
 
-      xserver.displayManager.session = [{
-        manage = "window";
-        name = "Sway";
-        start = ''
-          ${pkgs.sway}/bin/sway --unsupported-gpu &
-          waitPID=$!
-        '';
-      }];    
+      xserver = {
+        displayManager.session = [{
+          manage = "window";
+          name = "Sway";
+          start = ''
+            ${pkgs.sway}/bin/sway --unsupported-gpu &
+            waitPID=$!
+          '';
+        }];
+        videoDrivers = [ "nouveau" ];
+      };
     };
     
     xdg.portal = {