From 330c08199e6dfb4bdfb79cf20679ea62b1db2949 Mon Sep 17 00:00:00 2001
From: Eric Seidel <eseidel@google.com>
Date: Wed, 6 Jan 2016 17:17:16 -0800
Subject: [PATCH] Revert "Make `flutter listen` exit nicely when missing
 dependencies"

---
 packages/flutter_tools/lib/src/commands/listen.dart | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/packages/flutter_tools/lib/src/commands/listen.dart b/packages/flutter_tools/lib/src/commands/listen.dart
index c789b85959..f636b3f3b0 100644
--- a/packages/flutter_tools/lib/src/commands/listen.dart
+++ b/packages/flutter_tools/lib/src/commands/listen.dart
@@ -45,20 +45,20 @@ class ListenCommand extends StartCommandBase {
       try {
         runCheckedSync(<String>['which', 'fswatch']);
       } catch (e) {
-        logging.severe('"listen" command requires '
+        logging.severe('"listen" command is only useful if you have installed '
             'fswatch on Mac.  Run "brew install fswatch" to install it with '
             'homebrew.');
-        exit(1);
+        return null;
       }
       return <String>['fswatch', '-r', '-v', '-1']..addAll(directories);
     } else if (Platform.isLinux) {
       try {
         runCheckedSync(<String>['which', 'inotifywait']);
       } catch (e) {
-        logging.severe('"listen" requires '
+        logging.severe('"listen" command is only useful if you have installed '
             'inotifywait on Linux.  Run "apt-get install inotify-tools" or '
             'equivalent to install it.');
-        exit(1);
+        return null;
       }
       return <String>[
         'inotifywait',