From 2a842a1386b81159801086e53032d0cf2f580968 Mon Sep 17 00:00:00 2001
From: Matthew Harm Bekkema <mbekkema97@gmail.com>
Date: Sat, 10 Nov 2018 13:17:04 +1000
Subject: [PATCH] Workaround for issue #44254 (Steam cannot connect to friends
 network) (#44602)

* steam: Set TZ to detected timezone on startup

Workaround for issue #44254 (Steam cannot connect to friends network)
---
 pkgs/games/steam/chrootenv.nix | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/pkgs/games/steam/chrootenv.nix b/pkgs/games/steam/chrootenv.nix
index 2762155d63c..c31b8b22216 100644
--- a/pkgs/games/steam/chrootenv.nix
+++ b/pkgs/games/steam/chrootenv.nix
@@ -180,6 +180,15 @@ in buildFHSUserEnv rec {
   '';
 
   profile = ''
+    # Workaround for issue #44254 (Steam cannot connect to friends network)
+    # https://github.com/NixOS/nixpkgs/issues/44254
+    if [ -z ''${TZ+x} ]; then
+      new_TZ="$(readlink -f /etc/localtime | grep -P -o '(?<=/zoneinfo/).*$')"
+      if [ $? -eq 0 ]; then
+        export TZ="$new_TZ"
+      fi
+    fi
+
     export STEAM_RUNTIME=${if nativeOnly then "0" else "/steamrt"}
   '' + extraProfile;