setup.py was trying to build _weakref which is redundant as it's a built-in
module.
Closes issue #9848. Thanks to Arfrever Frehtes Taifersar Arahesis for the bug
report.
diff --git a/Misc/NEWS b/Misc/NEWS
index d528d3c..43c55df 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -183,6 +183,9 @@
Build
-----
+- Issue #9848: Stopping trying to build _weakref in setup.py as it is a
+ built-in module.
+
- Issue #9806: python-config now has an ``--extension-suffix`` option that
outputs the suffix for dynamic libraries including the ABI version name
defined by PEP 3149.