From df0e24319d7bf5903be5bbad5134dfa48c6aa653 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Krist=C3=B3f=20T=C3=B3th?= <kristof.toth@avatao.com>
Date: Wed, 1 Aug 2018 17:19:31 +0200
Subject: [PATCH] Fix SnapshotProvider failing on taking_snapshot without
 changes

---
 lib/tfw/components/snapshot_provider.py | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/lib/tfw/components/snapshot_provider.py b/lib/tfw/components/snapshot_provider.py
index 3623f0e..aa9bb1f 100644
--- a/lib/tfw/components/snapshot_provider.py
+++ b/lib/tfw/components/snapshot_provider.py
@@ -66,10 +66,14 @@ class SnapshotProvider:
             'git', 'add',
             '-A'
         ))
-        self._run((
-            'git', 'commit',
-            '-m', 'Snapshot'
-        ))
+        try:
+            self._get_stdout((
+                'git', 'commit',
+                '-m', 'Snapshot'
+            ))
+        except CalledProcessError as err:
+            if b'nothing to commit, working tree clean' not in err.output:
+                raise
 
     def _check_head_not_detached(self):
         if self._head_detached: