From 283d8245e148a886d707db76ad09a5ef49de5162 Mon Sep 17 00:00:00 2001
From: skshetry <18718008+skshetry@users.noreply.github.com>
Date: Fri, 17 Mar 2023 17:14:34 +0545
Subject: [PATCH] flush streams before fork (#9203)

---
 dvc/daemon.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/dvc/daemon.py b/dvc/daemon.py
index 2fd216b79..874627e43 100644
--- a/dvc/daemon.py
+++ b/dvc/daemon.py
@@ -56,6 +56,11 @@ def _spawn_windows(cmd, env):
 def _spawn_posix(cmd, env):
     from dvc.cli import main
 
+    if sys.stdout and not sys.stdout.closed:
+        sys.stdout.flush()
+    if sys.stderr and not sys.stderr.closed:
+        sys.stderr.flush()
+
     # NOTE: using os._exit instead of sys.exit, because dvc built
     # with PyInstaller has trouble with SystemExit exception and throws
     # errors such as "[26338] Failed to execute script __main__"