Replace setup.py by pip install.
@@ -6,6 +6,6 @@ echo compiler=mingw32 >> "%CFG%"
echo [build_ext] >> "%CFG%"
echo compiler=mingw32 >> "%CFG%"
-"%PYTHON%" setup.py install --single-version-externally-managed
+"%PYTHON%" -m pip install . --no-deps -vv
if errorlevel 1 exit 1
