From 0b2a226dc8f942588c2f75447c8ef905ceb4fa83 Mon Sep 17 00:00:00 2001
From: Damien Elmes <gpg@ankiweb.net>
Date: Sat, 9 Apr 2022 16:48:06 +1000
Subject: [PATCH] Add mock stdout/stderr for console=False case on Windows

PyInstaller provided a NulWriter when running in GUI mode, but stdout/
stderr now default to None with PyOxidizer.

Fixes #1786
---
 qt/aqt/__init__.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/qt/aqt/__init__.py b/qt/aqt/__init__.py
index e62f2afd2..bb070ea67 100644
--- a/qt/aqt/__init__.py
+++ b/qt/aqt/__init__.py
@@ -59,8 +59,10 @@ try:
     sys.stdout.reconfigure(encoding="utf-8")  # type: ignore
     sys.stderr.reconfigure(encoding="utf-8")  # type: ignore
 except AttributeError:
-    # on Windows without console, NullWriter doesn't support this
-    pass
+    if is_win:
+        # On Windows without console; add a mock writer. The stderr
+        # writer will be overwritten when ErrorHandler is initialized.
+        sys.stderr = sys.stdout = open(os.devnull, "w", encoding="utf8")
 
 appVersion = _version
 appWebsite = "https://apps.ankiweb.net/"