nanobind stub for C++ packages

[rael346]

Hi,

I'm currently following the workspace tutorial using nanobind and C++. So far pyright LSP works with packages within the environment but not the C++ package cpp-math (in the tutorial). I tried using the nanobind_add_stub() cmake command to generate the stubs but couldn't locate the them in the .pixi build folders. Here is the CMakeLists.txt for the package (everything else is the same as the tutorial).

cmake_minimum_required(VERSION 3.20...3.27)
project(cpp_math)

find_package(Python 3.8 COMPONENTS Interpreter Development.Module REQUIRED)

execute_process(
		COMMAND "${Python_EXECUTABLE}" -m nanobind --cmake_dir
		OUTPUT_STRIP_TRAILING_WHITESPACE OUTPUT_VARIABLE nanobind_ROOT
)

execute_process(
				COMMAND ${Python_EXECUTABLE} -c "import sysconfig; print(sysconfig.get_path('purelib'))"
				OUTPUT_VARIABLE PYTHON_SITE_PACKAGES
				OUTPUT_STRIP_TRAILING_WHITESPACE
)

find_package(nanobind CONFIG REQUIRED)

nanobind_add_module(${PROJECT_NAME} src/math.cpp)

install(
				TARGETS ${PROJECT_NAME}
				EXPORT ${PROJECT_NAME}Targets
				LIBRARY DESTINATION ${PYTHON_SITE_PACKAGES}
				ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
				RUNTIME DESTINATION ${BINDIR}
)

nanobind_add_stub(
		${PROJECT_NAME}_stub
		INSTALL_TIME
		MODULE ${PROJECT_NAME}
		OUTPUT ${PROJECT_NAME}.pyi
		PYTHON_PATH "."
)

Not sure if this is a bug or I'm doing it wrong so any help is appreciated.