refactor: make the whole thing more generic

modules/nixos/boot/quiet.nix

@@ -0,0 +1,36 @@
+{ config, lib, ... }:
+
+with lib;
+
+let cfg = config.boot.quiet;
+
+in {
+  options.boot.quiet = { enable = mkEnableOption (mdDoc "Clean, quiet boot"); };
+
+  config = mkIf cfg.enable {
+    boot = {
+      loader = {
+        timeout = 0;
+        systemd-boot.consoleMode = "max";
+      };
+
+      kernelParams = [
+        # Redirect all kernel messages to a console off screen
+        #"fbcon=vc:2-6"
+        #"console=tty1"
+
+        "video=3840x2160@144"
+        "splash"
+        "quiet"
+
+        #"rd.udev.log_level=3"
+        #"rd.systemd.show_status=false"
+        #"udev.log_priority=3"
+        #"boot.shell_on_fail"
+        #"vt.global_cursor_default=0" # no cursor blinking
+      ];
+      consoleLogLevel = 0;
+      initrd.verbose = false;
+    };
+  };
+}