Avoid displaying network transport warning when a ssh remote does not yet have an annex.uuid set.

Instead, only display transport error if the configlist output doesn't
include an annex.uuid line, even an empty one.

A recent change made git-annex init try to get all the remote uuids, and so
the transport error would be displayed by it. It was also displayed when
eg, copying files to a remote that had no uuid yet.

Annex/UUID.hs

@@ -15,6 +15,7 @@ module Annex.UUID (
 	getUUID,
 	getRepoUUID,
 	getUncachedUUID,
+	isUUIDConfigured,
 	prepUUID,
 	genUUID,
 	genUUIDInNameSpace,
@@ -84,6 +85,13 @@ getUncachedUUID = toUUID . Git.Config.get key ""
   where
 	(ConfigKey key) = configkey
 
+-- Does the repo's config have a key for the UUID?
+-- True even when the key has no value.
+isUUIDConfigured :: Git.Repo -> Bool
+isUUIDConfigured = isJust . Git.Config.getMaybe key 
+  where
+	(ConfigKey key) = configkey
+
 {- Make sure that the repo has an annex.uuid setting. -}
 prepUUID :: Annex ()
 prepUUID = whenM ((==) NoUUID <$> getUUID) $

Remote/Git.hs

@@ -221,7 +221,7 @@ tryGitConfigRead autoinit r
 		v <- Git.Config.fromPipe r cmd params
 		case v of
 			Right (r', val) -> do
-				when (getUncachedUUID r' == NoUUID && not (null val)) $ do
+				unless (isUUIDConfigured r' || null val) $ do
 					warningIO $ "Failed to get annex.uuid configuration of repository " ++ Git.repoDescribe r
 					warningIO $ "Instead, got: " ++ show val
 					warningIO $ "This is unexpected; please check the network transport!"

debian/changelog

@@ -42,6 +42,8 @@ git-annex (5.20150931) UNRELEASED; urgency=medium
     that could omit such files or otherwise be bad. Fixed by aborting the
     whole merge process when git merge fails for any reason other than a
     merge conflict.
+  * Avoid displaying network transport warning when a ssh remote
+    does not yet have an annex.uuid set.
   * Debian: Add torrent library to build-depends as it's packaged now,
     and stop recommending bittornado | bittorrent.
   * Debian: Remove dependency on transformers library, as it is now

doc/forum/error_setting_up_centralized_server_on_OSX_-_failed_to_get_annex.uuid_configuration_of_repository_origin/comment_1_943ff286824bd59a164b161553d65698._comment

@@ -0,0 +1,15 @@
+[[!comment format=mdwn
+ username="joey"
+ subject="""comment 1"""
+ date="2015-10-15T18:55:42Z"
+ content="""
+Yeah, this is a bug, and one I was able to reproduce. It was introduced in
+the last release of git-annex.
+
+Luckily, it's only a cosmetic bug. The `git annex init` does
+succeed, and your repo is left in an ok state. If you continue
+along the walkthrough path, adding some files and syncing with origin, it
+will proceed to set up the origin appropriately and everything should work.
+
+I'm gonna fix the bug of course. Indeed, it's fixed in git master now.
+"""]]