bpo-40334: PEP 617 implementation: New PEG parser for CPython (GH-19503)

Co-authored-by: Guido van Rossum <guido@python.org>
Co-authored-by: Lysandros Nikolaou <lisandrosnik@gmail.com>
diff --git a/PC/config.c b/PC/config.c
index 8eaeb31..32af2a8 100644
--- a/PC/config.c
+++ b/PC/config.c
@@ -75,6 +75,8 @@
 
 extern PyObject* PyInit__contextvars(void);
 
+extern PyObject* PyInit__peg_parser(void);
+
 /* tools/freeze/makeconfig.py marker for additional "extern" */
 /* -- ADDMODULE MARKER 1 -- */
 
@@ -169,6 +171,7 @@
     {"_opcode", PyInit__opcode},
 
     {"_contextvars", PyInit__contextvars},
+    {"_peg_parser", PyInit__peg_parser},
 
     /* Sentinel */
     {0, 0}