fix: improve Python detection in manylinux environment

- Modify faiss CMakeLists.txt to try both FindPython and FindPython3
- Add scikit-build configuration to help with Python detection
- Simplify Linux environment variables in cibuildwheel
- Add CMake Python detection before faiss configuration

.github/workflows/build-cibuildwheel.yml

@@ -59,6 +59,13 @@ jobs:
           # Install numpy before building
           CIBW_BEFORE_BUILD: |
             pip install numpy
+            pip install --upgrade pip setuptools wheel
+          
+          CIBW_BEFORE_BUILD_LINUX: |
+            pip install numpy
+            pip install --upgrade pip setuptools wheel
+            # 确保Python开发文件可用
+            python -m pip install --force-reinstall numpy
           
           CIBW_BEFORE_ALL_MACOS: |
             brew install boost zeromq openblas cmake libomp
@@ -76,8 +83,6 @@ jobs:
           # Linux-specific environment variables
           CIBW_ENVIRONMENT_LINUX: |
             CMAKE_BUILD_PARALLEL_LEVEL=8
-            Python_FIND_VIRTUALENV=ONLY
-            Python3_FIND_VIRTUALENV=ONLY
       
       - name: Build leann-backend-diskann wheels  
         uses: pypa/cibuildwheel@v2.20.0
@@ -99,6 +104,13 @@ jobs:
           # Install numpy before building
           CIBW_BEFORE_BUILD: |
             pip install numpy
+            pip install --upgrade pip setuptools wheel
+          
+          CIBW_BEFORE_BUILD_LINUX: |
+            pip install numpy
+            pip install --upgrade pip setuptools wheel
+            # 确保Python开发文件可用
+            python -m pip install --force-reinstall numpy
           
           CIBW_BEFORE_ALL_MACOS: |
             brew install boost zeromq openblas cmake libomp
@@ -116,6 +128,11 @@ jobs:
             CMAKE_BUILD_PARALLEL_LEVEL=8
             Python_FIND_VIRTUALENV=ONLY
             Python3_FIND_VIRTUALENV=ONLY
+            Python_FIND_STRATEGY=LOCATION
+            Python3_FIND_STRATEGY=LOCATION
+            CMAKE_PREFIX_PATH=$VIRTUAL_ENV
+            Python_EXECUTABLE=$VIRTUAL_ENV/bin/python
+            Python3_EXECUTABLE=$VIRTUAL_ENV/bin/python
       
       - uses: actions/upload-artifact@v4
         with:

packages/leann-backend-hnsw/CMakeLists.txt

@@ -24,6 +24,23 @@ set(MSGPACK_USE_BOOST OFF CACHE BOOL "" FORCE)
 add_compile_definitions(MSGPACK_NO_BOOST)
 include_directories(third_party/msgpack-c/include)
 
+# Find Python before configuring Faiss
+# Check if we're in scikit-build environment
+if(DEFINED SKBUILD)
+    message(STATUS "Building with scikit-build, using provided Python")
+    # scikit-build-core provides Python_* variables
+else()
+    find_package(Python REQUIRED COMPONENTS Interpreter Development NumPy)
+endif()
+
+# Print Python information for debugging
+message(STATUS "Python_FOUND: ${Python_FOUND}")
+message(STATUS "Python_VERSION: ${Python_VERSION}")
+message(STATUS "Python_EXECUTABLE: ${Python_EXECUTABLE}")
+message(STATUS "Python_INCLUDE_DIRS: ${Python_INCLUDE_DIRS}")
+message(STATUS "Python_LIBRARIES: ${Python_LIBRARIES}")
+message(STATUS "Python_NumPy_INCLUDE_DIRS: ${Python_NumPy_INCLUDE_DIRS}")
+
 # Faiss configuration - streamlined build
 set(FAISS_ENABLE_PYTHON ON CACHE BOOL "" FORCE)
 set(FAISS_ENABLE_GPU OFF CACHE BOOL "" FORCE)

packages/leann-backend-hnsw/pyproject.toml

@@ -24,4 +24,5 @@ cmake.verbose = true
 
 # CMake definitions to optimize compilation
 [tool.scikit-build.cmake.define]
-CMAKE_BUILD_PARALLEL_LEVEL = "8"
+CMAKE_BUILD_PARALLEL_LEVEL = "8"
+SKBUILD_SOABI = "YES"