From 24590d731eba893cf11ce5651af6c47cb6f8d93f Mon Sep 17 00:00:00 2001
From: Joey Hess <joeyh@joeyh.name>
Date: Tue, 26 Jan 2016 08:48:14 -0400
Subject: Roll the dns build flag into the assistant build flag.

---
 BuildFlags.hs    |  3 ---
 Utility/SRV.hs   | 43 +------------------------------------------
 debian/changelog |  1 +
 git-annex.cabal  |  8 +-------
 4 files changed, 3 insertions(+), 52 deletions(-)

diff --git a/BuildFlags.hs b/BuildFlags.hs
index 764af6df7..906e26270 100644
--- a/BuildFlags.hs
+++ b/BuildFlags.hs
@@ -73,9 +73,6 @@ buildFlags = filter (not . null)
 #else
 #warning Building without ConcurrentOutput
 #endif
-#ifdef WITH_DNS
-	, "DNS"
-#endif
 #ifdef WITH_TDFA
 	, "TDFA"
 #endif
diff --git a/Utility/SRV.hs b/Utility/SRV.hs
index 991f3a3d6..033064a27 100644
--- a/Utility/SRV.hs
+++ b/Utility/SRV.hs
@@ -1,6 +1,4 @@
 {- SRV record lookup
- -
- - Uses either the the standalone Haskell DNS package, or the host command.
  -
  - Copyright 2012 Joey Hess <id@joeyh.name>
  -
@@ -13,26 +11,15 @@ module Utility.SRV (
 	mkSRVTcp,
 	mkSRV,
 	lookupSRV,
-	lookupSRVHost,
 	HostPort,
 ) where
 
-import Utility.Process
-import Utility.Exception
-import Utility.PartialPrelude
-
-import Network
 import Data.Function
 import Data.List
-import Data.Maybe
-import Control.Applicative
-import Prelude
-
-#ifdef WITH_DNS
+import Network
 import qualified Network.DNS.Lookup as DNS
 import Network.DNS.Resolver
 import qualified Data.ByteString.UTF8 as B8
-#endif
 
 newtype SRV = SRV String
 	deriving (Show, Eq)
@@ -52,7 +39,6 @@ mkSRVTcp = mkSRV "tcp"
  -
  - On error, returns an empty list. -}
 lookupSRV :: SRV -> IO [HostPort]
-#ifdef WITH_DNS
 lookupSRV (SRV srv) = do
 	seed <- makeResolvSeed defaultResolvConf
 	r <- withResolver seed $ flip DNS.lookupSRV $ B8.fromString srv
@@ -68,33 +54,6 @@ lookupSRV (SRV srv) = do
 		( (priority, weight)
 		, (B8.toString hostname, PortNumber $ fromIntegral port)
 		)
-#else
-lookupSRV = lookupSRVHost
-#endif
-
-lookupSRVHost :: SRV -> IO [HostPort]
-lookupSRVHost (SRV srv) = catchDefaultIO [] $ 
-	parseSrvHost <$> readProcessEnv "host" ["-t", "SRV", "--", srv]
-		-- clear environment, to avoid LANG affecting output
-		(Just [])
-
-parseSrvHost :: String -> [HostPort]
-parseSrvHost = orderHosts . catMaybes . map parse . lines
-  where
-	parse l = case words l of
-		[_, _, _, _, spriority, sweight, sport, hostname] -> do
-			let v = 
-				( readish sport :: Maybe Int
-				, readish spriority :: Maybe Int
-				, readish sweight :: Maybe Int
-				)
-			case v of
-				(Just port, Just priority, Just weight) -> Just
-					( (priority, weight)
-					, (hostname, PortNumber $ fromIntegral port)
-					)
-				_ -> Nothing
-		_ -> Nothing
 
 orderHosts :: [(PriorityWeight, HostPort)] -> [HostPort]
 orderHosts = map snd . sortBy (compare `on` fst)
diff --git a/debian/changelog b/debian/changelog
index e81f4ed6f..43a8863e9 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -24,6 +24,7 @@ git-annex (6.20160115) UNRELEASED; urgency=medium
     the core dependencies.
   * Removed the feed build flag, which only adds feed to the core
     dependencies.
+  * Roll the dns build flag into the assistant build flag.
 
  -- Joey Hess <id@joeyh.name>  Fri, 15 Jan 2016 14:05:01 -0400
 
diff --git a/git-annex.cabal b/git-annex.cabal
index 1b2f82b74..91dc21ee8 100644
--- a/git-annex.cabal
+++ b/git-annex.cabal
@@ -46,9 +46,6 @@ Flag Webapp
 Flag Pairing
   Description: Enable pairing
 
-Flag DNS
-  Description: Enable the haskell DNS library for DNS lookup
-
 Flag Production
   Description: Enable production build (slower build; faster binary)
 
@@ -165,6 +162,7 @@ Executable git-annex
     CPP-Options: -DWITH_WEBDAV
 
   if flag(Assistant) && ! os(solaris)
+    Build-Depends: dns
     CPP-Options: -DWITH_ASSISTANT
 
   if flag(Assistant)
@@ -223,10 +221,6 @@ Executable git-annex
   if (! os(windows))
     Build-Depends: network-protocol-xmpp, gnutls (>= 0.1.4), xml-types
     CPP-Options: -DWITH_XMPP
-
-  if flag(DNS)
-    Build-Depends: dns
-    CPP-Options: -DWITH_DNS
   
   if flag(TorrentParser)
     Build-Depends: torrent (>= 10000.0.0)
-- 
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