--- CMakeLists.txt.orig	2022-09-01 16:15:02 UTC
+++ CMakeLists.txt
@@ -201,7 +201,7 @@ endif ()
 
 # Check for Qt...
 if (CONFIG_QT6)
-  find_package (Qt6 QUIET)
+  find_package (Qt6 REQUIRED QUIET)
   if (NOT Qt6_FOUND)
     set (CONFIG_QT6 0)
   endif ()