From 2bc78e62bc036db65135e37a9bc9d7c6d6496ebe Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ville=20Skytt=C3=A4?= <ville.skytta@iki.fi>
Date: Thu, 8 Dec 2016 14:51:06 +0200
Subject: [PATCH] Cause system exit only for non-zero exit statuses in
 setuptools command

See https://github.com/pypa/setuptools/issues/850#issuecomment-265445007
---
 src/flake8/main/setuptools_command.py | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/flake8/main/setuptools_command.py b/src/flake8/main/setuptools_command.py
index f6bd7a8..ba5a260 100644
--- a/src/flake8/main/setuptools_command.py
+++ b/src/flake8/main/setuptools_command.py
@@ -94,4 +94,10 @@ class Flake8(setuptools.Command):
         self.flake8.report_statistics()
         self.flake8.report_benchmarks()
         self.flake8.formatter.stop()
-        self.flake8.exit()
+        try:
+            self.flake8.exit()
+        except SystemExit as e:
+            # Cause system exit only if exit code is not zero (terminates
+            # other possibly remaining/pending setuptools commands).
+            if e.code:
+                raise