Comment all `.pause(shield=True)` attempts again, need to solve cancel scope `.__exit__()` frame hiding issue..

tractor/devx/_debug.py

@@ -631,6 +631,7 @@ def _set_trace(
         # no f!#$&* idea, but when we're in async land
         # we need 2x frames up?
         frame = frame.f_back
+        # frame = frame.f_back
 
         # if shield:
         #     frame = frame.f_back
@@ -646,17 +647,19 @@ def _set_trace(
     # undo_
 
 
-
 async def pause(
 
     debug_func: Callable = _set_trace,
     release_lock_signal: trio.Event | None = None,
 
-    # allow caller to pause despite task cancellation,
+    # TODO: allow caller to pause despite task cancellation,
     # exactly the same as wrapping with:
     # with CancelScope(shield=True):
     #     await pause()
-    shield: bool = False,
+    # => the REMAINING ISSUE is that the scope's .__exit__() frame
+    # is always show in the debugger on entry.. and there seems to
+    # be no way to override it?..
+    # shield: bool = False,
 
     # TODO:
     # shield: bool = False
@@ -689,13 +692,22 @@ async def pause(
     ):
         Lock.local_pdb_complete = trio.Event()
 
-    if shield:
+    # if shield:
     debug_func = partial(
         debug_func,
-            shield=shield,
+        # shield=shield,
     )
 
-    with trio.CancelScope(shield=shield):
+    # def _exit(self, *args, **kwargs):
+    #     __tracebackhide__: bool = True
+    #     super().__exit__(*args, **kwargs)
+
+    # trio.CancelScope.__exit__.__tracebackhide__ = True
+
+    # import types
+    # with trio.CancelScope(shield=shield) as cs:
+        # cs.__exit__ = types.MethodType(_exit, cs)
+        # cs.__exit__.__tracebackhide__ = True
 
         # TODO: need a more robust check for the "root" actor
     if (