[Sqlalchemy-tickets] Issue #2986: setuptools has removed Feature (zzzeek/sqlalchemy)

[Mike B. <iss...@bi...>]

New issue 2986: setuptools has removed Feature
https://bitbucket.org/zzzeek/sqlalchemy/issue/2986/setuptools-has-removed-feature

Mike Bayer:

lets wait and see if there's another way to get this, otherwise we have to take the ``--without-cextensions`` flag out of the documentation.

backport to 0.8, 0.7

```
#!diff

diff --git a/doc/build/changelog/changelog_07.rst b/doc/build/changelog/changelog_07.rst
index da89bbd..14849fe 100644
--- a/doc/build/changelog/changelog_07.rst
+++ b/doc/build/changelog/changelog_07.rst
@@ -7,6 +7,15 @@
     :version: 0.7.11
 
     .. change::
+        :tags: bug, general
+        :versions: 0.8.6, 0.9.4
+
+        Made a critical fix in the ``setup.py`` file due to the removal
+        of the ``setuptools.Feature`` extension.  For the moment,
+        the ``--without-cextensions`` flag will not function with
+        the latest versions of setuptools.
+
+    .. change::
         :tags: bug, engine
         :tickets: 2851
         :versions: 0.8.3, 0.9.0b1
diff --git a/setup.py b/setup.py
index f682081..0b32522 100644
--- a/setup.py
+++ b/setup.py
@@ -11,8 +11,13 @@ from distutils.command.build_ext import build_ext
 from distutils.errors import (CCompilerError, DistutilsExecError,
                               DistutilsPlatformError)
 try:
-    from setuptools import setup, Extension, Feature
+    from setuptools import setup, Extension
     has_setuptools = True
+
+    try:
+        from setuptools import Feature
+    except ImportError:
+        Feature = None
 except ImportError:
     has_setuptools = False
     from distutils.core import setup, Extension

```