I think we can just dump the else clause, per the comment I just deleted.

Skip Montanaro · Skip Montanaro · commit d3f6c9d17b7c · 2007-09-06T16:30:31.000Z
diff --git a/setup.py b/setup.py
@@ -617,9 +617,6 @@ def detect_modules(self):
             # OpenSSL doesn't do these until 0.9.8 so we'll bring our own hash
             exts.append( Extension('_sha256', ['sha256module.c']) )
             exts.append( Extension('_sha512', ['sha512module.c']) )
-        else:
-            # these aren't strictly missing since they are unneeded.
-            missing.extend(['_sha256', '_sha512'])
 
         # Modules that provide persistent dictionary-like semantics.  You will
         # probably want to arrange for at least one of them to be available on
