Plymouth

Plymouth 是一个在启动过程早期运行的应用程序，提供图形启动动画，被大多数面向桌面的 Linux 发行版所使用。

用法

例如，您可以通过以下代码使用 adi1090x's collection 中的启动动画：

❄︎ configuration.nix

{ pkgs, ... }: {
  boot = {

    plymouth = {
      enable = true;
      theme = "rings";
      themePackages = with pkgs; [
        # By default we would install all themes
        (adi1090x-plymouth-themes.override {
          selected_themes = [ "rings" ];
        })
      ];
    };

    # Enable "Silent boot"
    consoleLogLevel = 3;
    initrd.verbose = false;
    kernelParams = [
      "quiet"
      "udev.log_level=3"
      "systemd.show_status=auto"
    ];
    # Hide the OS choice for bootloaders.
    # It's still possible to open the bootloader list by pressing any key
    # It will just not appear on screen unless a key is pressed
    loader.timeout = 0;

  };
}

在图形的启动过程中，可以用退出键（或者说 ESC）来切换在文本模式和 Playmouth 界面中切换。

If you are using LUKS encryption and the password prompt falls back to text mode, it may help to switch to initrd-systemd mode:

boot.initrd.systemd.enable = true;

While the default bgrt theme supports graphical password entry, this may not be supported by all themes.