configuration.nix/home/wm/addon/swaync/default.nix

{ pkgs, ... }: {
  services.swaync = {
    enable = true;
    settings = {
      positionX = "right";
      positionY = "top";
      layer = "overlay";
      control-center-margin-top = 0;
      control-center-margin-bottom = 0;
      control-center-margin-right = 0;
      control-center-margin-left = 0;
      control-center-layer = "overlay";
      timeout = 10;
      timeout-low = 5;
      timeout-critical = 0;
      notification-window-width = 500;
      keyboard-shortcuts = true;
      image-visibility = "when-available";
      fit-to-screen = true;
      control-center-width = 500;
      transition-time = 50;
      hide-on-clear = true;
      hide-on-action = true;
      script-fail-notify = true;

      widgets = [
        "title"
        "dnd"
        "mpris"
        "notifications"
      ];
      widget-config = {
        title = {
          text = "Notifications";
          clear-all-button = true;
          button-text = "󰆴 Clear";
        };
        dnd = {
          text = "Do Not Disturb";
        };
        label = {
          max-lines = 5;
          text = "Notifications";
        };
        mpris = {
          image-size = 96;
          image-radius = 12;
        };
      };
    };
    style = ./style.css;
  };
}