From 2227f2c67a3c3b7b31c9133acf5ddfdf2cd60ba5 Mon Sep 17 00:00:00 2001
From: Yegor Timoshenko <yegortimoshenko@gmail.com>
Date: Mon, 25 Dec 2017 04:49:53 +0000
Subject: [PATCH] apple/macbook-air/4: resolve tearing

---
 apple/macbook-air/4/default.nix | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/apple/macbook-air/4/default.nix b/apple/macbook-air/4/default.nix
index c6ed7e6..146289d 100644
--- a/apple/macbook-air/4/default.nix
+++ b/apple/macbook-air/4/default.nix
@@ -1,7 +1,13 @@
+{ lib, ... }:
+
 {
   imports = [ ../. ];
 
   boot.kernelParams = [
     "acpi_backlight=vendor"
   ];
+
+  services.xserver.deviceSection = lib.mkDefault ''
+    Option "TearFree" "true"
+  '';
 }