From 0d8d19437e6da1f8d6a6218a1467c83bd35dee08 Mon Sep 17 00:00:00 2001
From: Moritz Lell <mlell08@gmail.com>
Date: Wed, 30 Oct 2019 19:11:00 +0100
Subject: [PATCH] Set file descriptor as inheritable for all pythons >=3.4

This is mandated by PEP 446
---
 redo/builder.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/redo/builder.py b/redo/builder.py
index 4b06b15..c6504fe 100644
--- a/redo/builder.py
+++ b/redo/builder.py
@@ -18,6 +18,11 @@ def _try_stat(filename):
         else:
             raise
 
+def _has_pep446():
+    """Test the python version whether the PEP making file descriptors 
+    non-inheritable applies"""
+    return sys.version_info >= (3,4)
+
 
 log_reader_pid = None
 stderr_fd = None
@@ -42,6 +47,7 @@ def start_stdin_log_reader(status, details, pretty, color,
     global stderr_fd
     r, w = os.pipe()    # main pipe to redo-log
     ar, aw = os.pipe()  # ack pipe from redo-log --ack-fd
+    if _has_pep446(): os.set_inheritable(aw, True)
     sys.stdout.flush()
     sys.stderr.flush()
     pid = os.fork()