build/cmake: python cleanup

python/CMakeLists.txt

@@ -8,16 +8,19 @@ configure_file(README.md README.md COPYONLY)
 find_package(Python3 REQUIRED COMPONENTS Interpreter)
 
 add_custom_target(python
-    COMMAND ${Python3_EXECUTABLE} -m build .
+    COMMAND ${Python3_EXECUTABLE} -m build "${CMAKE_CURRENT_BINARY_DIR}"
     DEPENDS opendht opendht_cpp.pxd opendht.pyx pyproject.toml
             ${CURRENT_SOURCE_DIR}/opendht/__init__.py
             ${CURRENT_SOURCE_DIR}/opendht/aio.py)
 
 install(CODE [[
     execute_process(
-        COMMAND "${Python3_EXECUTABLE}" -m pip install --no-deps --break-system-packages .
+        COMMAND "${Python3_EXECUTABLE}" -m pip install --no-deps --break-system-packages "${CMAKE_CURRENT_BINARY_DIR}"
         WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
+        OUTPUT_VARIABLE _pip_output
+        ERROR_VARIABLE _pip_output
         RESULT_VARIABLE _pip_result)
+    message(STATUS ${_pip_output})
     if(NOT _pip_result EQUAL 0)
         message(FATAL_ERROR "pip install failed with code ${_pip_result}")
     endif()