Index: CMakeLists.txt
===================================================================
diff -u -rb915ccc1a72fcca21908c35140af7ac7df1f1f37 -r51e99f2578e0901d9da91a4cb60d1b8858cfe971
--- CMakeLists.txt	(.../CMakeLists.txt)	(revision b915ccc1a72fcca21908c35140af7ac7df1f1f37)
+++ CMakeLists.txt	(.../CMakeLists.txt)	(revision 51e99f2578e0901d9da91a4cb60d1b8858cfe971)
@@ -8,7 +8,7 @@
 include(cmake/Debug.cmake)
 include(cmake/PythonVenv.cmake)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 set(CMAKE_DISABLE_IN_SOURCE_BUILD ON)