From 07be28a2fb8291dbaaf7bc8779e3fc1029b9dccd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Leonardo=20Eug=C3=AAnio?= <lelgenio@disroot.org>
Date: Fri, 31 May 2024 23:10:41 -0300
Subject: [PATCH] gnome: enable variable refresh rate

---
 system/gnome.nix | 23 ++++++++++++++---------
 1 file changed, 14 insertions(+), 9 deletions(-)

diff --git a/system/gnome.nix b/system/gnome.nix
index 175909e..e5bd708 100644
--- a/system/gnome.nix
+++ b/system/gnome.nix
@@ -1,13 +1,18 @@
-# Edit this configuration file to define what should be installed on
-# your system.  Help is available in the configuration.nix(5) man page
-# and in the NixOS manual (accessible by running ‘nixos-help’).
-{ config, pkgs, ... }:
+{ pkgs, ... }:
 {
-  # Enable the X11 windowing system.
-  services.xserver.enable = true;
-  # Enable the GNOME Desktop Environment.
-  services.xserver.displayManager.gdm.enable = true;
-  services.xserver.desktopManager.gnome.enable = true;
+  services.xserver = {
+    enable = true;
+    desktopManager.gnome = {
+      enable = true;
+      # Enable VRR (Variable Refresh Rate)
+      extraGSettingsOverridePackages = with pkgs; [ gnome.mutter ];
+      extraGSettingsOverrides = ''
+        [org.gnome.mutter]
+        experimental-features=['variable-refresh-rate', 'scale-monitor-framebuffer']
+      '';
+    };
+    displayManager.gdm.enable = true;
+  };
 
   # Workaround for https://github.com/NixOS/nixpkgs/issues/103746
   systemd.services."getty@tty1".enable = false;