From a9d212c8887b265496c87e882befb96c93b1861f Mon Sep 17 00:00:00 2001
From: Matthias Radestock <matthias.radestock@gmail.com>
Date: Thu, 31 Dec 2015 10:43:46 +0000
Subject: [PATCH] don't fail on missing docker_tls_args

instead just don't auto-detect TLS args in that case.

This makes `weave --local launch` work (again).

Fixes #1844.
---
 weave | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/weave b/weave
index 73ce4012..c66b61df 100755
--- a/weave
+++ b/weave
@@ -1455,7 +1455,7 @@ proxy_args() {
     PROXY_HOST=""
     proxy_parse_args "$@"
 
-    if [ -z "$PROXY_TLS_ENABLED" -a -z "$PROXY_TLS_DETECTION_DISABLED" ] ; then
+    if [ -z "$PROXY_TLS_ENABLED" -a -z "$PROXY_TLS_DETECTION_DISABLED" ] && command_exists docker_tls_args ; then
         if ! DOCKER_TLS_ARGS=$(docker_tls_args) ; then
             echo "Unable to auto-detect proxy TLS configuration; you must launch the proxy with" >&2
             echo "'weave launch-proxy' and supply '--no-detect-tls' or TLS options." >&2