add internal pyarrow.libs to library_dirs

Author: WillAyd

ci/scripts/python_build.bat

@@ -136,7 +136,7 @@ pushd %SOURCE_DIR%\python
 
 @REM Build PyArrow
 %PYTHON_CMD% -m build --wheel . --no-isolation || exit /B 1
-%PYTHON_CMD% -m delvewheel repair --ignore-existing --no-mangle-all dist\* || exit /B 1
+%PYTHON_CMD% -m delvewheel repair --ignore-existing --no-mangle-all --include-imports dist\* || exit /B 1
 %PYTHON_CMD% -m pip install --no-index --find-links .\wheelhouse\ pyarrow || exit /B 1
 
 popd

python/pyarrow/__init__.py

@@ -404,7 +404,9 @@ def get_library_dirs():
     linking C or Cython extensions using pyarrow
     """
     package_cwd = _os.path.dirname(__file__)
-    library_dirs = [package_cwd]
+    library_dirs = [
+        package_cwd, _os.path.join(_os.path.dirname(package_cwd), "pyarrow.libs")
+    ]
 
     def append_library_dir(library_dir):
         if library_dir not in library_dirs: