Add systemd notification on listener available

flake.nix

@@ -50,8 +50,10 @@
         systemd.user.services.frajtano = {
           Unit.Description = "frajtano";
           Unit.After = ["default.target"];
+          Service.Type = "notify";
           Service.Environment = ["'FRAJTANO_DIR=${cfg.dir}'"];
-          Service.ExecStart = "${self.packages.${pkgs.system}.default}/bin/frajtano start";
+          Service.ExecSearchPath = ["${self.packages.${pkgs.system}.default}/bin"];
+          Service.ExecStart = "frajtano start";
           Install.WantedBy = ["default.target"];
         };