apache-httpd: Make 2.4 the default

The NixOS 14.11 release is a good time to finally make 2.4 the
default.

nixos/doc/manual/release-notes/rl-1411.xml

@@ -11,6 +11,19 @@ following incompatible changes:
 
 <itemizedlist>
 
+  <listitem><para>The default version of Apache httpd is now 2.4. If
+  you use the <option>extraConfig</option> option to pass literal
+  Apache configuration text, you may need to update it — see <link
+  xlink:href="http://httpd.apache.org/docs/2.4/upgrading.html">Apache’s
+  documentation</link> for details. If you wish to continue to use
+  httpd 2.2, add the following line to your NixOS configuration:
+
+<programlisting>
+services.httpd.package = pkgs.apacheHttpd_2_2;
+</programlisting>
+
+  </para></listitem>
+
   <listitem><para>The host side of a container virtual Ethernet pair
   is now called <literal>ve-<replaceable>container-name</replaceable></literal>
   rather than <literal>c-<replaceable>container-name</replaceable></literal>.</para></listitem>

nixos/modules/services/web-servers/apache-httpd/default.nix

@@ -109,6 +109,8 @@ let
       "mpm_${mainCfg.multiProcessingModule}"
       "authz_core"
       "unixd"
+      "cache" "cache_disk"
+      "slotmem_shm"
     ]
     ++ (if mainCfg.multiProcessingModule == "prefork" then [ "cgi" ] else [ "cgid" ])
     ++ optional enableSSL "ssl"
@@ -420,8 +422,7 @@ in
 
       package = mkOption {
         type = types.package;
-        default = pkgs.apacheHttpd.override { mpm = mainCfg.multiProcessingModule; };
+        default = pkgs.apacheHttpd;
-        example = literalExample "pkgs.apacheHttpd_2_4";
         description = ''
           Overridable attribute of the Apache HTTP Server package to use.
         '';
@@ -597,7 +598,7 @@ in
     assertions = [ { assertion = mainCfg.enableSSL == true
                                -> mainCfg.sslServerCert != null
                                     && mainCfg.sslServerKey != null;
-                     message = "SSL is enabled for HTTPD, but sslServerCert and/or sslServerKey haven't been specified."; }
+                     message = "SSL is enabled for httpd, but sslServerCert and/or sslServerKey haven't been specified."; }
                  ];
 
     users.extraUsers = optionalAttrs (mainCfg.user == "wwwrun") (singleton

nixos/tests/proxy.nix

@@ -22,20 +22,19 @@ in
 
         { services.httpd.enable = true;
           services.httpd.adminAddr = "bar@example.org";
-          services.httpd.extraModules = ["proxy_balancer"];
+          services.httpd.extraModules = [ "proxy_balancer" "lbmethod_byrequests" ];
 
           services.httpd.extraConfig =
             ''
               ExtendedStatus on
 
               <Location /server-status>
-                Order deny,allow
+                Require all granted
-                Allow from all
                 SetHandler server-status
               </Location>
 
               <Proxy balancer://cluster>
-                Allow from all
+                Require all granted
                 BalancerMember http://${nodes.backend1.config.networking.hostName} retry=0
                 BalancerMember http://${nodes.backend2.config.networking.hostName} retry=0
               </Proxy>

pkgs/top-level/all-packages.nix

@@ -7342,7 +7342,7 @@ let
 
   rdf4store = callPackage ../servers/http/4store { };
 
-  apacheHttpd = pkgs.apacheHttpd_2_2;
+  apacheHttpd = pkgs.apacheHttpd_2_4;
 
   apacheHttpd_2_2 = callPackage ../servers/http/apache-httpd/2.2.nix {
     sslSupport = true;