nixpkgs/pkgs/desktops/kde-4.7/files/kde-wallpapers-buildsystem.patch

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3d3e247..f78db67 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,5 +1,10 @@
-find_package(KDE4 REQUIRED)
-include(KDE4Defaults)
+project(kde-wallpapers NONE)
+if( WALLPAPER_INSTALL_DIR )
+  message(STATUS "Installing wallpapers to user-supplied directory ${WALLPAPER_INSTALL_DIR}")
+else()
+  find_package(KDE4 REQUIRED)
+  include(KDE4Defaults)
+endif()
 
 install(DIRECTORY Air DESTINATION ${WALLPAPER_INSTALL_DIR} PATTERN .svn EXCLUDE)