nixos/httpd: cleanup old apache2.2 syntax

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

@@ -8,8 +8,6 @@ let
 
   httpd = mainCfg.package.out;
 
-  version24 = !versionOlder httpd.version "2.4";
-
   httpdConf = mainCfg.configFile;
 
   php = mainCfg.phpPackage.override { apacheHttpd = httpd.dev; /* otherwise it only gets .out */ };
@@ -107,11 +105,10 @@ let
       "auth_basic" "auth_digest"
 
       # Authentication: is the user who he claims to be?
-      "authn_file" "authn_dbm" "authn_anon"
-      (if version24 then "authn_core" else "authn_alias")
+      "authn_file" "authn_dbm" "authn_anon" "authn_core"
 
       # Authorization: is the user allowed access?
-      "authz_user" "authz_groupfile" "authz_host"
+      "authz_user" "authz_groupfile" "authz_host" "authz_core"
 
       # Other modules.
       "ext_filter" "include" "log_config" "env" "mime_magic"
@@ -119,14 +116,9 @@ let
       "mime" "dav" "status" "autoindex" "asis" "info" "dav_fs"
       "vhost_alias" "negotiation" "dir" "imagemap" "actions" "speling"
       "userdir" "alias" "rewrite" "proxy" "proxy_http"
-    ]
-    ++ optionals version24 [
+      "unixd" "cache" "cache_disk" "slotmem_shm" "socache_shmcb"
       "mpm_${mainCfg.multiProcessingModule}"
-      "authz_core"
-      "unixd"
-      "cache" "cache_disk"
-      "slotmem_shm"
-      "socache_shmcb"
+
       # For compatibility with old configurations, the new module mod_access_compat is provided.
       "access_compat"
     ]
@@ -135,19 +127,8 @@ let
     ++ extraApacheModules;
 
 
-  allDenied = if version24 then ''
-    Require all denied
-  '' else ''
-    Order deny,allow
-    Deny from all
-  '';
-
-  allGranted = if version24 then ''
-    Require all granted
-  '' else ''
-    Order allow,deny
-    Allow from all
-  '';
+  allDenied = "Require all denied";
+  allGranted = "Require all granted";
 
 
   loggingConf = (if mainCfg.logFormat != "none" then ''
@@ -180,9 +161,9 @@ let
 
 
   sslConf = ''
-    SSLSessionCache ${if version24 then "shmcb" else "shm"}:${mainCfg.stateDir}/ssl_scache(512000)
+    SSLSessionCache shmcb:${mainCfg.stateDir}/ssl_scache(512000)
 
-    ${if version24 then "Mutex" else "SSLMutex"} posixsem
+    Mutex posixsem
 
     SSLRandomSeed startup builtin
     SSLRandomSeed connect builtin
@@ -322,9 +303,7 @@ let
 
     ServerRoot ${httpd}
 
-    ${optionalString version24 ''
     DefaultRuntimeDir ${mainCfg.stateDir}/runtime
-    ''}
 
     PidFile ${mainCfg.stateDir}/httpd.pid
 
@@ -397,14 +376,6 @@ let
     # Generate directives for the main server.
     ${perServerConf true mainCfg}
 
-    # Always enable virtual hosts; it doesn't seem to hurt.
-    ${let
-        listen = concatMap getListen allHosts;
-        uniqueListen = uniqList {inputList = listen;};
-        directives = concatMapStrings (listen: "NameVirtualHost ${listenToString listen}\n") uniqueListen;
-      in optionalString (!version24) directives
-    }
-
     ${let
         makeVirtualHost = vhost: ''
           <VirtualHost ${concatStringsSep " " (map listenToString (getListen vhost))}>
@@ -717,10 +688,10 @@ in
           ''
             mkdir -m 0750 -p ${mainCfg.stateDir}
             [ $(id -u) != 0 ] || chown root.${mainCfg.group} ${mainCfg.stateDir}
-            ${optionalString version24 ''
+
             mkdir -m 0750 -p "${mainCfg.stateDir}/runtime"
             [ $(id -u) != 0 ] || chown root.${mainCfg.group} "${mainCfg.stateDir}/runtime"
-            ''}
+
             mkdir -m 0700 -p ${mainCfg.logDir}
 
             # Get rid of old semaphores.  These tend to accumulate across