python: repair python installation with cmake

python/CMakeLists.txt

@@ -12,41 +12,36 @@ add_custom_target(python
     DEPENDS opendht opendht_cpp.pxd opendht.pyx pyproject.toml
             ${CURRENT_SOURCE_DIR}/opendht/__init__.py
             ${CURRENT_SOURCE_DIR}/opendht/aio.py)
-set(_pip_commands 
-    "${Python3_EXECUTABLE};-m;pip;install;--no-deps;--break-system-packages;${CMAKE_CURRENT_BINARY_DIR}"
-    "${Python3_EXECUTABLE};-m;pip;install;--no-deps;${CMAKE_CURRENT_BINARY_DIR}"
-    "pip3;install;--no-deps;--break-system-packages;${CMAKE_CURRENT_BINARY_DIR}"
-    "pip;install;--no-deps;--break-system-packages;${CMAKE_CURRENT_BINARY_DIR}")
-
-install(CODE [[
-    # Try different pip installation methods
-    
-    set(_success FALSE)
-    foreach(_cmd_list ${_pip_commands})
-        string(REPLACE ";" " " _cmd_str "${_cmd_list}")
-        message(STATUS "Attempting: ${_cmd_str}")
-        
-        execute_process(
-            COMMAND ${_cmd_list}
-            WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
-            OUTPUT_VARIABLE _pip_output
-            ERROR_VARIABLE _pip_error
-            RESULT_VARIABLE _pip_result)
             
-        if(_pip_result EQUAL 0)
-            message(STATUS "Successfully installed Python package")
-            message(STATUS "Output: ${_pip_output}")
-            set(_success TRUE)
-            break()
+install(CODE [[
+    if(NOT Python3_EXECUTABLE)
+        find_package(Python3 COMPONENTS Interpreter)
+    endif()
+    if(NOT Python3_EXECUTABLE)
+        message(WARNING "Skipping Python package install: Python interpreter not found.")
+    else()
+        execute_process(
+            COMMAND ${Python3_EXECUTABLE} -m pip --version
+            OUTPUT_QUIET
+            ERROR_QUIET
+            RESULT_VARIABLE _pip_check)
+        if(NOT _pip_check EQUAL 0)
+            message(WARNING "Skipping Python package install: pip not available for ${Python3_EXECUTABLE}.")
         else()
-            message(WARNING "Command failed with code ${_pip_result}")
-            message(WARNING "Output: ${_pip_output}")
-            message(WARNING "Error: ${_pip_error}")
+            execute_process(
+                COMMAND ${Python3_EXECUTABLE} -m pip install --no-deps --break-system-packages .
+                WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/python
+                OUTPUT_VARIABLE _pip_output
+                ERROR_VARIABLE _pip_error
+                RESULT_VARIABLE _pip_result)
+
+            if(_pip_result EQUAL 0)
+                message(STATUS "Successfully installed Python package")
+                message(STATUS "Output: ${_pip_output}")
+            else()
+                message(WARNING "pip install failed (code: ${_pip_result})\nOutput: ${_pip_output}\nError: ${_pip_error}")
+            endif()
         endif()
-    endforeach()
-    
-    if(NOT _success)
-        message(FATAL_ERROR "All pip install attempts failed. Check that pip is available and the wheel was built correctly.")
     endif()
 ]])
 if (OPENDHT_TOOLS)