Hello everyone, I am trying to build ROS 2 Humble from source (which should be supported by tier 3 support) on the new nvidia jetson orin nano dev kit, which is set up with Ubuntu 20.04 and jetpack 5.1.1. I get decently far in the build, but then it fails at this specific package “pythonorocoskdl_vendor”, with the following error:

— stderr: python_orocos_kdl_vendor
CMake Error at /usr/share/cmake-3.16/Modules/FindPackageHandleStandardArgs.cmake:146 (message):
Could NOT find Python3 (missing: Python3_LIBRARIES Python3_INCLUDE_DIRS
Development) (found version “3.9.5”)
Call Stack (most recent call first):
/usr/share/cmake-3.16/Modules/FindPackageHandleStandardArgs.cmake:393 (_FPHSA_FAILURE_MESSAGE)
/usr/share/cmake-3.16/Modules/FindPython/Support.cmake:2214 (find_package_handle_standard_args)
/usr/share/cmake-3.16/Modules/FindPython3.cmake:300 (include)
CMakeLists.txt:26 (find_package)

Any ideas on how I can get this to build? I appreciate any help you can give me!