xbanish service: init at 1.4

nixos/modules/module-list.nix

···
   ./services/x11/window-managers/windowlab.nix
   ./services/x11/window-managers/wmii.nix
   ./services/x11/window-managers/xmonad.nix
+  ./services/x11/xbanish.nix
   ./services/x11/xfs.nix
   ./services/x11/xserver.nix
   ./system/activation/activation-script.nix

nixos/modules/services/x11/xbanish.nix

···
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let cfg = config.services.xbanish;
+
+in {
+  options.services.xbanish = {
+
+    enable = mkEnableOption "xbanish";
+
+    arguments = mkOption {
+      description = "Arguments to pass to xbanish command";
+      default = "";
+      example = "-d -i shift";
+      type = types.str;
+    };
+  };
+
+  config = mkIf cfg.enable {
+    systemd.user.services.xbanish = {
+      description = "xbanish hides the mouse pointer";
+      wantedBy = [ "default.target" ];
+      serviceConfig.ExecStart = ''
+        ${pkgs.xbanish}/bin/xbanish ${cfg.arguments}
+      '';
+      serviceConfig.Restart = "always";
+    };
+  };
+}