From 4c5ea02dc5b85398f674e1459e27ece5cbd7f66f Mon Sep 17 00:00:00 2001
From: Benjamin Staffin <benley@gmail.com>
Date: Sat, 15 Feb 2020 16:45:47 -0500
Subject: [PATCH] grub: Update extraConfig example text (#79406)

This expands the example to something one might actually want to use
to set up a serial console.
---
 nixos/modules/system/boot/loader/grub/grub.nix | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/nixos/modules/system/boot/loader/grub/grub.nix b/nixos/modules/system/boot/loader/grub/grub.nix
index 26c1197bf97..b97ef88a7ca 100644
--- a/nixos/modules/system/boot/loader/grub/grub.nix
+++ b/nixos/modules/system/boot/loader/grub/grub.nix
@@ -224,7 +224,11 @@ in
 
       extraConfig = mkOption {
         default = "";
-        example = "serial; terminal_output.serial";
+        example = ''
+          serial --unit=0 --speed=115200 --word=8 --parity=no --stop=1
+          terminal_input --append serial
+          terminal_output --append serial
+        '';
         type = types.lines;
         description = ''
           Additional GRUB commands inserted in the configuration file