On Windows, we still can't use Py_LIMITED_API for bad reasons.

1 files changed, 7 insertions, 1 deletions

diff --git a/cffi/setuptools_ext.py b/cffi/setuptools_ext.py
index a6eb8b8..df5a518 100644
--- a/cffi/setuptools_ext.py
+++ b/cffi/setuptools_ext.py
@@ -81,8 +81,14 @@ def _set_py_limited_api(Extension, kwds):
     it doesn't so far, creating troubles.  That's why we check
     for "not hasattr(sys, 'gettotalrefcount')" (the 2.7 compatible equivalent
     of 'd' not in sys.abiflags). (http://bugs.python.org/issue28401)
+
+    On Windows, with CPython <= 3.4, it's better not to use py_limited_api
+    because virtualenv *still* doesn't copy PYTHON3.DLL on these versions.
+    For now we'll skip py_limited_api on all Windows versions to avoid an
+    inconsistent mess.
     """
-    if 'py_limited_api' not in kwds and not hasattr(sys, 'gettotalrefcount'):
+    if ('py_limited_api' not in kwds and not hasattr(sys, 'gettotalrefcount')
+            and sys.platform != 'win32'):
         import setuptools
         try:
             setuptools_major_version = int(setuptools.__version__.partition('.')[0])