From 3b3dc83902a0d1c7735f112a8bd97bd5adaf8efb Mon Sep 17 00:00:00 2001
From: Evgeny Egorochkin <phreedom@yandex.ru>
Date: Thu, 8 Aug 2013 04:44:14 +0300
Subject: [PATCH] Speed up application start

---
 modules/services/x11/desktop-managers/kde4.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/modules/services/x11/desktop-managers/kde4.nix b/modules/services/x11/desktop-managers/kde4.nix
index dcc3859820c6..f0c5322386c5 100644
--- a/modules/services/x11/desktop-managers/kde4.nix
+++ b/modules/services/x11/desktop-managers/kde4.nix
@@ -97,6 +97,11 @@ in
             # See http://lists-archives.org/kde-devel/26175-what-when-will-icon-cache-refresh.html
             rm -fv $HOME/.kde/cache-*/icon-cache.kcache
 
+            # Speed up application start by 50-150ms according to
+            # http://kdemonkey.blogspot.nl/2008/04/magic-trick.html
+            rm -fv $HOME/.compose-cache
+            mkdir $HOME/.compose-cache
+
             # Qt writes a weird ‘libraryPath’ line to
             # ~/.config/Trolltech.conf that causes the KDE plugin
             # paths of previous KDE invocations to be searched.