From 9e24a01d55ba914858895322dabed37b610ddc86 Mon Sep 17 00:00:00 2001
From: Tyler Goodlet <jgbt@protonmail.com>
Date: Sun, 10 Aug 2025 15:07:42 -0400
Subject: [PATCH] Toss in masked `.set_trace()` for unshielded `.pause()` debug

---
 tractor/devx/debug/_trace.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tractor/devx/debug/_trace.py b/tractor/devx/debug/_trace.py
index a23d2e23..aa0dbfd6 100644
--- a/tractor/devx/debug/_trace.py
+++ b/tractor/devx/debug/_trace.py
@@ -561,6 +561,9 @@ async def _pause(
             return
 
         elif isinstance(pause_err, trio.Cancelled):
+            __tracebackhide__: bool = False
+            # XXX, unmask to REPL it.
+            # mk_pdb().set_trace(frame=inspect.currentframe())
             _repl_fail_report += (
                 'You called `tractor.pause()` from an already cancelled scope!\n\n'
                 'Consider `await tractor.pause(shield=True)` to make it work B)\n'