src/sage_setup/cython_options.py: Restore auto_pickle=False

Author: Matthias Koeppe

src/sage_setup/cython_options.py

@@ -5,6 +5,8 @@ def compiler_directives(profile: bool):
     Returns a list of Cython directives used for compilation.
     """
     return dict(
+        # Do not generate __reduce__ methods
+        auto_pickle=False,
         # Do not create __test__ dictionary automatically from docstrings
         autotestdict=False,
         # Do not check for division by 0 (this is about 35% quicker than with check)
@@ -29,4 +31,4 @@ def compile_time_env_variables():
         # The following two constants are here only for backwards compatibility of user packages
         PY_VERSION_HEX=sys.hexversion,
         PY_MAJOR_VERSION=sys.version_info[0]
-    )
+    )