--- tdesktop-2.7.4-full/Telegram/lib_base/base/platform/linux/base_linux_gtk_integration.h.orig	2021-05-13 14:25:20.591091208 +0200
+++ tdesktop-2.7.4-full/Telegram/lib_base/base/platform/linux/base_linux_gtk_integration.h	2021-05-13 17:02:03.571569712 +0200
@@ -10,6 +10,7 @@
 #include "base/const_string.h"
 
 #include <QtCore/QLibrary>
+#include <optional>
 
 namespace base {
 namespace Platform {