Merge #28925

sagemath · Feb 14, 2022 · 87277b3 · 87277b3
2 parents be39670 + f961a7d
commit 87277b3
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/src/setup.py b/src/setup.py
@@ -102,6 +102,13 @@
     Cython.Compiler.Options.embed_pos_in_docstring = True
     gdb_debug = os.environ.get('SAGE_DEBUG', None) != 'no'
 
+    # Support namespace packages in Cython 0.x
+    from sage_setup.find import is_package_or_namespace_package_dir
+    import Cython.Build.Dependencies
+    import Cython.Build.Cythonize
+    import Cython.Utils
+    Cython.Utils.is_package_dir = Cython.Build.Cythonize.is_package_dir = Cython.Build.Dependencies.is_package_dir = is_package_or_namespace_package_dir
+
     try:
         from Cython.Build import cythonize
         from sage.env import cython_aliases, sage_include_directories