From 457878482000f59133487772e66971e2e797c8a6 Mon Sep 17 00:00:00 2001
From: Peter Simons <simons@cryp.to>
Date: Tue, 29 Sep 2015 11:50:39 +0200
Subject: [PATCH] nixos: add services.bind.extraConfig option

This option allows users to add arbitrary configuration statements into
the generated named.conf file.
---
 nixos/modules/services/networking/bind.nix | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/nixos/modules/services/networking/bind.nix b/nixos/modules/services/networking/bind.nix
index 57547da1006..34e7470dfc6 100644
--- a/nixos/modules/services/networking/bind.nix
+++ b/nixos/modules/services/networking/bind.nix
@@ -24,6 +24,8 @@ let
         pid-file "/var/run/named/named.pid";
       };
 
+      ${cfg.extraConfig}
+
       ${ concatMapStrings
           ({ name, file, master ? true, slaves ? [], masters ? [] }:
             ''
@@ -110,6 +112,13 @@ in
         }];
       };
 
+      extraConfig = mkOption {
+        default = "";
+        description = "
+          Extra lines to be added verbatim to the generated named configuration file.
+        ";
+      };
+
       configFile = mkOption {
         default = confFile;
         description = "