[GR-54977] Patch typing_extensions to recognize _py_abc like stdlib typing module.

PullRequest: graalpython/3384

Author: steve-s

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/modules/cext/PythonCextFuncBuiltins.java

@@ -89,7 +89,17 @@ static Object staticmethod(Object callable,
     abstract static class PyTruffleCFunction_SetDoc extends CApiBinaryBuiltinNode {
         @Specialization
         @TruffleBoundary
-        static Object set(Object functionObj, TruffleString doc) {
+        static Object setString(Object functionObj, TruffleString doc) {
+            return setDoc(functionObj, doc);
+        }
+
+        @Specialization(guards = "isNoValue(nullValue)")
+        @TruffleBoundary
+        static Object setNull(Object functionObj, @SuppressWarnings("unused") PNone nullValue) {
+            return setDoc(functionObj, null);
+        }
+
+        private static PNone setDoc(Object functionObj, TruffleString doc) {
             PBuiltinFunction function;
             if (functionObj instanceof PBuiltinFunction builtinFunction) {
                 function = builtinFunction;

graalpython/lib-graalpython/patches/typing_extensions/metadata.toml

@@ -0,0 +1,3 @@
+[[rules]]
+patch = 'typing_extensions.patch'
+subdir = 'src'

graalpython/lib-graalpython/patches/typing_extensions/typing_extensions.patch

@@ -0,0 +1,13 @@
+diff --git a/typing_extensions.py b/typing_extensions.py
+index dec429c..3b711c6 100644
+--- a/typing_extensions.py
++++ b/typing_extensions.py
+@@ -544,7 +544,7 @@ else:
+         The abc and functools modules indiscriminately call isinstance() and
+         issubclass() on the whole MRO of a user class, which may contain protocols.
+         """
+-        return _caller(depth) in {'abc', 'functools', None}
++        return _caller(depth) in {'abc', 'functools', '_py_abc', None}
+ 
+     def _no_init(self, *args, **kwargs):
+         if type(self)._is_protocol:

mx.graalpython/mx_graalpython.py

@@ -2166,6 +2166,8 @@ def _python_checkpatchfiles():
             'autopep8.patch',
             # Whole license in the field. It's MIT
             'tiktoken-0.7.0.patch',
+            # License field is null. It's PSF
+            'typing_extensions.patch',
         }
         allowed_licenses = [
             "MIT",