python-tests.patch

index 5b6e13e..ac9ccf5 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -106,7 +106,7 @@ endif()
 add_test( NAME pyunittest COMMAND python -m unittest discover -s ${CMAKE_SOURCE_DIR}/python)
 set_property(TEST pyunittest
              PROPERTY ENVIRONMENT
-                      LD_LIBRARY_PATH=${CMAKE_CURRENT_BINARY_DIR}:${CMAKE_BINARY_DIR}/src:$ENV{LD_LIBRARY_PATH}
+                      LD_LIBRARY_PATH=${CMAKE_CURRENT_BINARY_DIR}:${CMAKE_BINARY_DIR}/src:$<TARGET_FILE_DIR:ROOT::Tree>
                       PYTHONPATH=${CMAKE_SOURCE_DIR}/python:$ENV{PYTHONPATH}
                       ROOT_INCLUDE_PATH=${CMAKE_SOURCE_DIR}/tests/datamodel:${ROOT_INCLUDE_PATH})
 set_property(TEST pyunittest PROPERTY DEPENDS write)