From 5bfe944907b0afcc979e4db7058cbfd884fd029b Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <eelco.dolstra@logicblox.com>
Date: Mon, 5 May 2014 16:23:38 +0200
Subject: [PATCH] Don't run hwclock if /dev/rtc doesn't exist

E.g. on EC2 instances.

Backport: 14.04
---
 nixos/modules/system/boot/shutdown.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nixos/modules/system/boot/shutdown.nix b/nixos/modules/system/boot/shutdown.nix
index 68bc936c5b0..11041066e07 100644
--- a/nixos/modules/system/boot/shutdown.nix
+++ b/nixos/modules/system/boot/shutdown.nix
@@ -13,7 +13,7 @@ with lib;
 
       unitConfig = {
         DefaultDependencies = false;
-        ConditionVirtualization = "!systemd-nspawn";
+        ConditionPathExists = "/dev/rtc";
       };
 
       serviceConfig = {