add missing Network.URI Ord instance for Debian stable

Utility/Network.hs

@@ -5,6 +5,8 @@
  - Licensed under the GNU GPL version 3 or higher.
  -}
 
+{-# LANGUAGE CPP #-}
+
 module Utility.Network where
 
 import Utility.Process
@@ -12,6 +14,14 @@ import Utility.Exception
 
 import Control.Applicative
 
+-- Old versions of network lacked an Ord for URI
+#if ! MIN_VERSION_network(2,4,0)
+import Network.URI
+
+instance Ord URI where
+	a `compare` b = show a `compare` show b
+#endif
+
 {- Haskell lacks uname(2) bindings, except in the
  - Bindings.Uname addon. Rather than depend on that,
  - use uname -n when available. -}