nixpkgs/pkgs/development/interpreters/python/cpython/2.7/2.7.3-no-libm.patch

--- origsrc/setup.py.orig	2012-11-27 09:28:34.051770900 -0500
+++ src/setup.py	2012-11-27 09:28:47.239270900 -0500
@@ -470,7 +470,7 @@
 
         # Check for MacOS X, which doesn't need libm.a at all
         math_libs = ['m']
-        if host_platform in ['darwin', 'beos']:
+        if host_platform in ['darwin', 'beos', 'cygwin']:
             math_libs = []
 
         # XXX Omitted modules: gl, pure, dl, SGI-specific modules