From b7313ddc32a500ab2132ec3e7d381393f04af18a Mon Sep 17 00:00:00 2001
From: Sebastien Bourdeauducq <sb@m-labs.hk>
Date: Wed, 10 Nov 2021 15:32:07 +0800
Subject: [PATCH] coredevice/rtio: fix tuple annotation

---
 artiq/coredevice/rtio.py | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/artiq/coredevice/rtio.py b/artiq/coredevice/rtio.py
index 216f94bd4..befab9339 100644
--- a/artiq/coredevice/rtio.py
+++ b/artiq/coredevice/rtio.py
@@ -1,5 +1,4 @@
 from numpy import int32, int64
-from typing import Tuple
 
 from artiq.language.core import extern
 
@@ -24,9 +23,9 @@ def rtio_input_data(channel: int32) -> int32:
     raise NotImplementedError("syscall not simulated")
 
 
-# NAC3TODO @extern
+@extern
 def rtio_input_timestamped_data(timeout_mu: int64,
-                                channel: int32) -> Tuple[int64, int32]:
+                                channel: int32) -> tuple[int64, int32]:
     """Wait for an input event up to timeout_mu on the given channel, and
     return a tuple of timestamp and attached data, or (-1, 0) if the timeout is
     reached."""