--- a/mercurial/cext/osutil.c	Sun Feb 20 16:13:57 2022 -0700
+++ b/mercurial/cext/osutil.c	Sun Feb 20 16:09:02 2022 -0700
@@ -198,7 +198,7 @@
 		? _S_IFDIR : _S_IFREG;
 
 	if (!wantstat)
-		return Py_BuildValue(PY23("si", "yi"), fd->cFileName, kind);
+		return Py_BuildValue("yi", fd->cFileName, kind);
 
 	py_st = PyObject_CallObject((PyObject *)&listdir_stat_type, NULL);
 	if (!py_st)
@@ -216,7 +216,7 @@
 	if (kind == _S_IFREG)
 		stp->st_size = ((__int64)fd->nFileSizeHigh << 32)
 				+ fd->nFileSizeLow;
-	return Py_BuildValue(PY23("siN", "yiN"), fd->cFileName,
+	return Py_BuildValue("yiN", fd->cFileName,
 		kind, py_st);
 }
 
@@ -404,10 +404,10 @@
 			PyObject *stat = makestat(&st);
 			if (!stat)
 				goto error;
-			elem = Py_BuildValue(PY23("siN", "yiN"), ent->d_name,
+			elem = Py_BuildValue("yiN", ent->d_name,
 					     kind, stat);
 		} else
-			elem = Py_BuildValue(PY23("si", "yi"), ent->d_name,
+			elem = Py_BuildValue("yi", ent->d_name,
 					     kind);
 		if (!elem)
 			goto error;
@@ -585,10 +585,10 @@
 				stat = makestat(&st);
 				if (!stat)
 					goto error;
-				elem = Py_BuildValue(PY23("siN", "yiN"),
+				elem = Py_BuildValue("yiN",
 						     filename, kind, stat);
 			} else
-				elem = Py_BuildValue(PY23("si", "yi"),
+				elem = Py_BuildValue("yi",
 						     filename, kind);
 			if (!elem)
 				goto error;
@@ -772,7 +772,7 @@
 static PyObject *setprocname(PyObject *self, PyObject *args)
 {
 	const char *name = NULL;
-	if (!PyArg_ParseTuple(args, PY23("s", "y"), &name))
+	if (!PyArg_ParseTuple(args, "y", &name))
 		return NULL;
 
 #if defined(SETPROCNAME_USE_SETPROCTITLE)
@@ -1127,14 +1127,14 @@
 	const char *path = NULL;
 	struct statfs buf;
 	int r;
-	if (!PyArg_ParseTuple(args, PY23("s", "y"), &path))
+	if (!PyArg_ParseTuple(args, "y", &path))
 		return NULL;
 
 	memset(&buf, 0, sizeof(buf));
 	r = statfs(path, &buf);
 	if (r != 0)
 		return PyErr_SetFromErrno(PyExc_OSError);
-	return Py_BuildValue(PY23("s", "y"), describefstype(&buf));
+	return Py_BuildValue("y", describefstype(&buf));
 }
 #endif /* defined(HAVE_LINUX_STATFS) || defined(HAVE_BSD_STATFS) */
 
@@ -1145,14 +1145,14 @@
 	const char *path = NULL;
 	struct statfs buf;
 	int r;
-	if (!PyArg_ParseTuple(args, PY23("s", "y"), &path))
+	if (!PyArg_ParseTuple(args, "y", &path))
 		return NULL;
 
 	memset(&buf, 0, sizeof(buf));
 	r = statfs(path, &buf);
 	if (r != 0)
 		return PyErr_SetFromErrno(PyExc_OSError);
-	return Py_BuildValue(PY23("s", "y"), buf.f_mntonname);
+	return Py_BuildValue("y", buf.f_mntonname);
 }
 #endif /* defined(HAVE_BSD_STATFS) */
 
@@ -1187,8 +1187,7 @@
 
 	static char *kwlist[] = {"path", "stat", "skip", NULL};
 
-	if (!PyArg_ParseTupleAndKeywords(args, kwargs, PY23("s#|OO:listdir",
-							    "y#|OO:listdir"),
+	if (!PyArg_ParseTupleAndKeywords(args, kwargs, "y#|OO:listdir",
 			kwlist, &path, &plen, &statobj, &skipobj))
 		return NULL;
 
@@ -1221,8 +1220,7 @@
 	int plus;
 	FILE *fp;
 
-	if (!PyArg_ParseTupleAndKeywords(args, kwds, PY23("et|si:posixfile",
-							  "et|yi:posixfile"),
+	if (!PyArg_ParseTupleAndKeywords(args, kwds, "et|yi:posixfile",
 					 kwlist,
 					 Py_FileSystemDefaultEncoding,
 					 &name, &mode, &bufsize))