From a937a7ef30efbf78e2779db459ed9e1b3f0883fb Mon Sep 17 00:00:00 2001
From: Julian Stecklina <julian.stecklina@cyberus-technology.de>
Date: Mon, 18 Apr 2022 08:47:12 +0200
Subject: [PATCH] evolution: disable hardware accelerated HTML rendering

... because this causes problems for some users. For affected people,
the email composer becomes non-functional.
---
 .../networking/mailreaders/evolution/evolution/default.nix | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/pkgs/applications/networking/mailreaders/evolution/evolution/default.nix b/pkgs/applications/networking/mailreaders/evolution/evolution/default.nix
index 9aac3db3594c..df13f4249b57 100644
--- a/pkgs/applications/networking/mailreaders/evolution/evolution/default.nix
+++ b/pkgs/applications/networking/mailreaders/evolution/evolution/default.nix
@@ -112,6 +112,13 @@ stdenv.mkDerivation rec {
     "big-parallel"
   ];
 
+  # On some systems (at least, Intel TGL iGPU), the email composer is
+  # broken since Webkit enables accelerated rending by default in
+  # 2.36. See #168645.
+  preFixup = ''
+    gappsWrapperArgs+=(--set WEBKIT_DISABLE_COMPOSITING_MODE 1)
+  '';
+
   doCheck = true;
 
   passthru = {