From ed869accdd1428c9cca452fdbe64b643d5662874 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Alex=20Gr=C3=B6nholm?= <alex.gronholm@nextday.fi>
Date: Thu, 25 Feb 2021 17:49:45 +0200
Subject: [PATCH] Added the "compact" keyword argument to
 TracebackException.__init__()

This is a requirement to achieve Python 3.10 compatibility.
---
 trio/_core/_multierror.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/trio/_core/_multierror.py b/trio/_core/_multierror.py
index 13fc3f3d0f..54295e71d5 100644
--- a/trio/_core/_multierror.py
+++ b/trio/_core/_multierror.py
@@ -381,11 +381,17 @@ def traceback_exception_init(
     limit=None,
     lookup_lines=True,
     capture_locals=False,
+    compact=False,
     _seen=None,
 ):
     if _seen is None:
         _seen = set()
 
+    if sys.version_info >= (3, 10):
+        kwargs = {"compact": compact}
+    else:
+        kwargs = {}
+
     # Capture the original exception and its cause and context as TracebackExceptions
     traceback_exception_original_init(
         self,
@@ -396,6 +402,7 @@ def traceback_exception_init(
         lookup_lines=lookup_lines,
         capture_locals=capture_locals,
         _seen=_seen,
+        **kwargs,
     )
 
     # Capture each of the exceptions in the MultiError along with each of their causes and contexts