elasticsearch2: init at 2.2.0

changes by @globin:
 * updated 2.1.0 to 2.2.0
 * moved to a new derivation

closes #11446

Signed-off-by: Robin Gloster <mail@glob.in>

nixos/modules/services/search/elasticsearch.nix

@@ -9,6 +9,8 @@ let
     network.host: ${cfg.listenAddress}
     network.port: ${toString cfg.port}
     network.tcp.port: ${toString cfg.tcp_port}
+    # TODO: find a way to enable security manager
+    security.manager.enabled: false
     cluster.name: ${cfg.cluster_name}
     ${cfg.extraConf}
   '';
@@ -39,8 +41,8 @@ in {
 
     package = mkOption {
       description = "Elasticsearch package to use.";
-      default = pkgs.elasticsearch;
-      defaultText = "pkgs.elasticsearch";
+      default = pkgs.elasticsearch2;
+      defaultText = "pkgs.elasticsearch2";
       type = types.package;
     };
 
@@ -129,7 +131,9 @@ in {
       wantedBy = [ "multi-user.target" ];
       after = [ "network-interfaces.target" ];
       path = [ pkgs.inetutils ];
-      environment = { ES_HOME = cfg.dataDir; };
+      environment = {
+        ES_HOME = cfg.dataDir;
+      };
       serviceConfig = {
         ExecStart = "${cfg.package}/bin/elasticsearch -Des.path.conf=${configDir} ${toString cfg.extraCmdLineOptions}";
         User = "elasticsearch";
@@ -137,10 +141,11 @@ in {
       };
       preStart = ''
         mkdir -m 0700 -p ${cfg.dataDir}
-        if [ "$(id -u)" = 0 ]; then chown -R elasticsearch ${cfg.dataDir}; fi
 
         # Install plugins
         ln -sfT ${esPlugins}/plugins ${cfg.dataDir}/plugins
+        ln -sfT ${cfg.package}/lib ${cfg.dataDir}/lib
+        if [ "$(id -u)" = 0 ]; then chown -R elasticsearch ${cfg.dataDir}; fi
       '';
       postStart = mkBefore ''
         until ${pkgs.curl}/bin/curl -s -o /dev/null ${cfg.listenAddress}:${toString cfg.port}; do