From 73f3fe4839a09cb95c0b27ecaa12030e37b96a07 Mon Sep 17 00:00:00 2001
From: r-vdp <ramses@well-founded.dev>
Date: Thu, 23 Jan 2025 15:50:31 +0100
Subject: [PATCH] nixos/activation: log output from pre-switch checks on stderr

---
 nixos/modules/system/activation/pre-switch-check.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/nixos/modules/system/activation/pre-switch-check.nix b/nixos/modules/system/activation/pre-switch-check.nix
index 60ccd448d155..e8640a0db3f2 100644
--- a/nixos/modules/system/activation/pre-switch-check.nix
+++ b/nixos/modules/system/activation/pre-switch-check.nix
@@ -10,8 +10,8 @@ let
       # pre-switch check ${name}
       if ! (
         ${text}
-      ); then
-        echo "Pre-switch check '${name}' failed"
+      ) >&2 ; then
+        echo "Pre-switch check '${name}' failed" >&2
         exit 1
       fi
     '') config.system.preSwitchChecks