update system

modules/home-manager/shell/asztal.nix

@@ -0,0 +1,39 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+
+with lib;
+
+let
+  cfg = config.shell.asztal;
+in
+{
+  options.shell.asztal = {
+    enable = mkEnableOption (mdDoc "Enable a shell based on AGS");
+  };
+
+  config = mkIf cfg.enable {
+    systemd.user.services.asztal = {
+      Unit = {
+        Description = "asztal";
+        PartOf = [
+          "graphical-session.target"
+          "tray.target"
+        ];
+      };
+      Service = {
+        ExecStart = "${pkgs.asztal}/bin/asztal";
+        ExecReload = "${pkgs.coreutils}/bin/kill -SIGUSR2 $MAINPID";
+        Restart = "always";
+        KillMode = "mixed";
+        Environment = "PATH=/run/current-system/sw/bin/:${with pkgs; lib.makeBinPath [ ]}";
+      };
+      Install = {
+        WantedBy = [ "graphical-session.target" ];
+      };
+    };
+  };
+}