diff --git a/setup.py b/setup.py
index d10f17d..d347d64 100755
--- a/setup.py
+++ b/setup.py
@@ -40,11 +40,12 @@ def main(args):
     setup_args = STATIC_PACKAGE_METADATA.copy()
 
     setup_args.update(dict(
-        packages=setuptools.find_packages(),
+        packages=setuptools.find_packages(exclude=["*.test", "*.test.*"]),
         install_requires=requirements,
         conditionalExtensions=getExtensions(),
         scripts=getScripts(),
         include_package_data=True,
+        exclude_package_data={'':['test/*']},
         zip_safe=False,
         extras_require=_EXTRAS_REQUIRE,
     ))
diff --git a/twisted/python/dist.py b/twisted/python/dist.py
index aac2756..5633f09 100644
--- a/twisted/python/dist.py
+++ b/twisted/python/dist.py
@@ -182,10 +182,10 @@ def getExtensions():
     Get the C extensions used for Twisted.
     """
     extensions = [
-        ConditionalExtension(
-            "twisted.test.raiser",
-            ["twisted/test/raiser.c"],
-            condition=lambda _: _isCPython),
+        #ConditionalExtension(
+        #    "twisted.test.raiser",
+        #    ["twisted/test/raiser.c"],
+        #    condition=lambda _: _isCPython),
 
         ConditionalExtension(
             "twisted.internet.iocpreactor.iocpsupport",