workaround https://github.com/cython/cython/issues/5949

diff --git a/packaging/pep517_backend/_backend.py b/packaging/pep517_backend/_backend.py
index 8bb2ee2..e640738 100644
--- a/packaging/pep517_backend/_backend.py
+++ b/packaging/pep517_backend/_backend.py
@@ -286,7 +286,7 @@ def build_wheel(
     """
     with maybe_prebuild_c_extensions(
             line_trace_cython_when_unset=False,
-            build_inplace=False,
+            build_inplace=True,
             config_settings=config_settings,
     ):
         return _setuptools_build_wheel(