--- tree/CMakeLists.txt.orig	2026-06-16 01:25:03 UTC
+++ tree/CMakeLists.txt
@@ -7,8 +7,8 @@ project (tree LANGUAGES CXX)
 
 project (tree LANGUAGES CXX)
 
-option(USE_SYSTEM_ABSEIL "Force use of system abseil-cpp" OFF)
-option(USE_SYSTEM_PYBIND11 "Force use of system pybind11" OFF)
+option(USE_SYSTEM_ABSEIL "Force use of system abseil-cpp" ON)
+option(USE_SYSTEM_PYBIND11 "Force use of system pybind11" ON)
 
 # Required for Python.h and python binding.
 find_package(Python3 COMPONENTS Interpreter Development)