exclude build.py, ffi and include

pyproject.toml

@@ -69,7 +69,7 @@ test = [
 [tool.setuptools]
 packages = ["curl_cffi", "curl_cffi.requests"]
 # package-data = { curl_cffi = ["libcurl/*/*"] }
-# include-package-data = true
+exclude-package-data = { curl_cffi = ["include/*", "ffi/*"] }
 
 
 [build-system]

setup.py

@@ -1,4 +1,7 @@
+import fnmatch
+
 from setuptools import setup
+from setuptools.command.build_py import build_py
 from wheel.bdist_wheel import bdist_wheel
 
 
@@ -13,8 +16,21 @@ def get_tag(self):
         return python, abi, plat
 
 
+excluded = ['curl_cffi/build.py', 'curl_cffi\\build.py']
+
+
+class excluded_build_py(build_py):
+    def find_package_modules(self, package, package_dir):
+        modules = super().find_package_modules(package, package_dir)
+        return [
+            (pkg, mod, file)
+            for (pkg, mod, file) in modules
+            if not any(fnmatch.fnmatchcase(file, pat=pattern) for pattern in excluded)
+        ]
+
+
 setup(
     # this option is only valid in setup.py
     cffi_modules=["curl_cffi/build.py:ffibuilder"],
-    cmdclass={"bdist_wheel": bdist_wheel_abi3},  # type: ignore
+    cmdclass={"bdist_wheel": bdist_wheel_abi3, 'build_py': excluded_build_py},  # type: ignore
 )