fix UI when enabling existing gcrypt repo

avoid editing repo for same reasons as in
52601eb606

avoid stomping on its description, even though no description exists until
after syncing is complete

Assistant/MakeRemote.hs

@@ -90,19 +90,23 @@ enableSpecialRemote name remotetype mcreds config = do
 	r <- Command.InitRemote.findExisting name
 	case r of
 		Nothing -> error $ "Cannot find a special remote named " ++ name
-		Just (u, c) -> setupSpecialRemote name remotetype config mcreds (Just u, c)
+		Just (u, c) -> setupSpecialRemote' False name remotetype config mcreds (Just u, c)
 
 setupSpecialRemote :: RemoteName -> RemoteType -> R.RemoteConfig -> Maybe CredPair -> (Maybe UUID, R.RemoteConfig) -> Annex RemoteName
-setupSpecialRemote name remotetype config mcreds (mu, c) = do
+setupSpecialRemote = setupSpecialRemote' True
+
+setupSpecialRemote' :: Bool -> RemoteName -> RemoteType -> R.RemoteConfig -> Maybe CredPair -> (Maybe UUID, R.RemoteConfig) -> Annex RemoteName
+setupSpecialRemote' setdesc name remotetype config mcreds (mu, c) = do
 	{- Currently, only 'weak' ciphers can be generated from the
 	 - assistant, because otherwise GnuPG may block once the entropy
 	 - pool is drained, and as of now there's no way to tell the user
 	 - to perform IO actions to refill the pool. -}
 	(c', u) <- R.setup remotetype mu mcreds $
 		M.insert "highRandomQuality" "false" $ M.union config c
-	whenM (isNothing . M.lookup u <$> uuidMap) $
-		describeUUID u name
 	configSet u c'
+	when setdesc $
+		whenM (isNothing . M.lookup u <$> uuidMap) $
+			describeUUID u name
 	return name
 
 {- Returns the name of the git remote it created. If there's already a