nagios: significant upgrades

- Upgrade Nagios Core to 4.x
 - Expose mainConfigFile and cgiConfigFile in module for finer
   configuration control.
 - Upgrade Plugins to 2.x
 - Remove default objectDefs, which users probably want to customize.
 - Systemd-ify Nagios module and simplify directory structure
 - Upgrade Nagios package with more modern patch, and ensure the
   statedir is set to /var/lib/nagios

Signed-off-by: Austin Seipp <aseipp@pobox.com>

pkgs/servers/monitoring/nagios/default.nix

@@ -1,23 +1,30 @@
-{ stdenv, fetchurl, perl, gdSupport ? false
-, gd ? null, libpng ? null, zlib ? null
-}:
+{ stdenv, fetchurl, perl, php, gd, libpng, zlib }:
 
 stdenv.mkDerivation {
-  name = "nagios-2.10";
+  name = "nagios-4.0.7";
 
   src = fetchurl {
-    url = mirror://sourceforge/nagios/nagios-2.10.tar.gz;
-    md5 = "8c3a29e138f2ff8c8abbd3dd8a40c4b6";
+    url = mirror://sourceforge/nagios/nagios-4.x/nagios-4.0.7/nagios-4.0.7.tar.gz;
+    sha256 = "1687qnbsag84r57y9745g2klypacfixd6gkzaj42lmzn0v8y27gg";
   };
 
-  patches = [./nagios.patch];
-  buildInputs = [perl] ++ (if gdSupport then [gd libpng zlib] else []);
+  patches = [ ./nagios.patch ];
+  buildInputs = [ php perl gd libpng zlib ];
+
+  configureFlags = [ "--localstatedir=/var/lib/nagios" ];
   buildFlags = "all";
+
+  # Do not create /var directories
+  preInstall = ''
+    substituteInPlace Makefile --replace '$(MAKE) install-basic' ""
+  '';
   installTargets = "install install-config";
 
   meta = {
     description = "A host, service and network monitoring program";
-    homepage = http://www.nagios.org/;
-    license = "GPL";
+    homepage    = http://www.nagios.org/;
+    license     = stdenv.lib.licenses.gpl2;
+    platforms   = stdenv.lib.platforms.linux;
+    maintainers = with stdenv.lib.maintainers; [ thoughtpolice relrod ];
   };
 }