From 1800c88967f253c8d975f5411af10b75d0b449e4 Mon Sep 17 00:00:00 2001
From: Ian Fischer <iansf@google.com>
Date: Wed, 2 Sep 2015 17:08:32 -0700
Subject: [PATCH] Guard sky_tool logs against failures due to missing
 idevicesyslog

---
 packages/flutter/lib/sky_tool | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/packages/flutter/lib/sky_tool b/packages/flutter/lib/sky_tool
index 51101165ed8..54c7d4efb1a 100755
--- a/packages/flutter/lib/sky_tool
+++ b/packages/flutter/lib/sky_tool
@@ -604,6 +604,17 @@ class IOSDevice(object):
 
     @classmethod
     def logs(cls):
+        try:
+            cmd = [
+                'which',
+                'idevicesyslog'
+            ]
+            logging.info(' '.join(cmd))
+            subprocess.check_call(cmd)
+        except subprocess.CalledProcessError:
+            logging.error('"log" command only works with iOS devices if you have installed idevicesyslog. Run "brew install libimobiledevice" to install it with homebrew.')
+            return None
+
         def do_logs():
             cmd = [
                 'idevicesyslog',