nsd: add package version 4.0.3

pkgs/servers/dns/nsd/default.nix

@@ -0,0 +1,34 @@
+{ config, stdenv, fetchurl, libevent, openssl
+}:
+
+stdenv.mkDerivation rec {
+  name = "nsd-4.0.3";
+
+  src = fetchurl {
+    url = "http://www.nlnetlabs.nl/downloads/nsd/${name}.tar.gz";
+    sha256 = "4bf05f2234e1b41899198aa1070f409201fc3c4980feef6567cd92c7074c4a8b";
+  };
+
+  buildInputs = [ libevent openssl ];
+
+  configureFlags =
+    let flag = state: flags: if state then map (x: "--enable-${x}")  flags
+                                      else map (x: "--disable-${x}") flags;
+     in flag (config.nsd.bind8Stats       or false) [ "bind8-stats" ]
+     ++ flag (config.nsd.checking         or false) [ "checking" ]
+     ++ flag (config.nsd.ipv6             or true)  [ "ipv6" ]
+     ++ flag (config.nsd.mmap             or false) [ "mmap" ]
+     ++ flag (config.nsd.minimalResponses or true)  [ "minimal-responses" ]
+     ++ flag (config.nsd.nsec3            or true)  [ "nsec3" ]
+     ++ flag (config.nsd.ratelimit        or false) [ "ratelimit" ]
+     ++ flag (config.nsd.recvmmsg         or false) [ "recvmmsg" ]
+     ++ flag (config.nsd.rootServer       or false) [ "root-server" ]
+     ++ [ "--with-ssl=${openssl}" "--with-libevent=${libevent}" ];
+
+  meta = {
+    description = "Authoritative only, high performance, simple and open source name server.";
+    license = "BSD";
+    homepage = http://www.nlnetlabs.nl;
+    platforms = with stdenv.lib.platforms; linux;
+  };
+}

pkgs/top-level/all-packages.nix

@@ -6679,6 +6679,8 @@ let
 
   ngircd = callPackage ../servers/irc/ngircd { };
 
+  nsd = callPackage ../servers/dns/nsd { };
+
   opensmtpd = callPackage ../servers/mail/opensmtpd { };
 
   petidomo = callPackage ../servers/mail/petidomo { };