python-Cython: revert upstream change to fix cross

srcpkgs/python-Cython/patches/0001-Revert-Leverage-distutil-s-build_extensions-so-that-.patch

@@ -0,0 +1,28 @@
+From dadae4af0da246f6252006d8c4afb9241b9c973a Mon Sep 17 00:00:00 2001
+From: Helmut Pozimski <helmut@pozimski.eu>
+Date: Wed, 6 Nov 2019 09:10:51 +0100
+Subject: [PATCH] Revert "Leverage distutil's build_extensions so that
+ --parallel works on Python 3 (GH-3187)"
+
+This reverts commit dfc582d290c9e1c938cc8d2cc1261bbde3a03e05.
+---
+ Cython/Distutils/old_build_ext.py | 3 +--
+ 1 file changed, 1 insertion(+), 2 deletions(-)
+
+diff --git a/Cython/Distutils/old_build_ext.py b/Cython/Distutils/old_build_ext.py
+index 882f72666..39b6cfb09 100644
+--- Cython/Distutils/old_build_ext.py
++++ Cython/Distutils/old_build_ext.py
+@@ -191,8 +191,7 @@ class old_build_ext(_build_ext.build_ext):
+ 
+         for ext in self.extensions:
+             ext.sources = self.cython_sources(ext.sources, ext)
+-        # Call original build_extensions
+-        _build_ext.build_ext.build_extensions(self)
++            self.build_extension(ext)
+ 
+     def cython_sources(self, sources, extension):
+         """
+-- 
+2.23.0
+