diff -Nur a/setup.py b/setup.py
--- a/setup.py	2015-11-29 11:30:46.000000000 +0800
+++ b/setup.py	2015-12-02 18:22:10.251268303 +0800
@@ -49,11 +49,11 @@
     scripts = getScripts()
 
     setup_args.update(dict(
-        packages=getPackages('twisted'),
+        packages=getPackages('twisted', ignore=['test']),
         conditionalExtensions=getExtensions(),
         scripts=scripts,
         extras_require=_EXTRAS_REQUIRE,
-        data_files=getDataFiles('twisted'),
+        data_files=getDataFiles('twisted', ignore=['test']),
         **STATIC_PACKAGE_METADATA))
 
     setup(**setup_args)
diff -Nur a/twisted/python/dist.py b/twisted/python/dist.py
--- a/twisted/python/dist.py	2015-11-29 11:30:47.000000000 +0800
+++ b/twisted/python/dist.py	2015-12-02 19:21:20.076370379 +0800
@@ -268,11 +268,6 @@
     """
     extensions = [
         ConditionalExtension(
-            "twisted.test.raiser",
-            ["twisted/test/raiser.c"],
-            condition=lambda _: _isCPython),
-
-        ConditionalExtension(
             "twisted.internet.iocpreactor.iocpsupport",
             ["twisted/internet/iocpreactor/iocpsupport/iocpsupport.c",
              "twisted/internet/iocpreactor/iocpsupport/winsock_pointers.c"],