teamspeak-server module: Create data directory by

leveraging users.users.<user>.createHome instead of a preStart script.
preStart script is still required to ensure proper creation of logging
directory.

nixos/modules/services/networking/teamspeak3.nix

@@ -16,7 +16,6 @@ in
   options = {
 
     services.teamspeak3 = {
-
       enable = mkOption {
         type = types.bool;
         default = false;
@@ -96,17 +95,17 @@ in
 
   ###### implementation
 
-  config = mkIf cfg.enable {
-
-    users.extraUsers.teamspeak =
-      { name = "teamspeak";
+  config = mkMerge [
+    (mkIf cfg.enable {
+      users.users.teamspeak = {
         description = "Teamspeak3 voice communication server daemon";
         group = group;
         uid = config.ids.uids.teamspeak;
+        home = cfg.dataDir;
+        createHome = true;
       };
 
-    users.extraGroups.teamspeak =
-      { name = "teamspeak";
+      users.groups.teamspeak = {
         gid = config.ids.gids.teamspeak;
       };
 
@@ -116,14 +115,12 @@ in
         wantedBy = [ "multi-user.target" ];
 
         preStart = ''
-        mkdir -p ${cfg.dataDir}
           mkdir -p ${cfg.logPath}
-        chown ${user}:${group} ${cfg.dataDir}
           chown ${user}:${group} ${cfg.logPath}
         '';
 
-      serviceConfig =
-        { ExecStart = ''
+        serviceConfig = {
+          ExecStart = ''
             ${ts3}/bin/ts3server \
               dbsqlpath=${ts3}/lib/teamspeak/sql/ logpath=${cfg.logPath} \
               voice_ip=${cfg.voiceIP} default_voice_port=${toString cfg.defaultVoicePort} \
@@ -133,10 +130,12 @@ in
           WorkingDirectory = cfg.dataDir;
           User = user;
           Group = group;
-          PermissionsStartOnly = true; # preStart needs to run with root permissions
+          PermissionsStartOnly = true;
         };
       };
-
-  };
-
+    })
+    {
+      meta.maintainers = with lib.maintainers; [ arobyn ];
+    }
+  ];
 }