update

hardware-configuration/tau.nix

@@ -48,4 +48,31 @@
   boot.initrd.luks.devices."luks-d86d9bcd-df3d-4fbe-b0c0-66297852fc46".device = "/dev/disk/by-uuid/d86d9bcd-df3d-4fbe-b0c0-66297852fc46";
   networking.hostName = "tau"; # Define your hostname.
 
+  boot.plymouth = {
+    enable = true;
+    theme = "pixels";
+    themePackages = with pkgs; [
+      # By default we would install all themes
+      (adi1090x-plymouth-themes.override {
+        selected_themes = [ "pixels" ];
+      })
+    ];
+  };
+
+  # Enable "Silent Boot"
+  boot.consoleLogLevel = 0;
+  boot.initrd.verbose = false;
+  boot.kernelParams = [
+    "quiet"
+    "splash"
+    "boot.shell_on_fail"
+    "loglevel=3"
+    "rd.systemd.show_status=false"
+    "rd.udev.log_level=3"
+    "udev.log_priority=3"
+  ];
+  # 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
+  boot.loader.timeout = 0;
 }