From 659da9b738bf0bbc215b3f2eff3870970d05b930 Mon Sep 17 00:00:00 2001
From: tv <tv@krebsco.de>
Date: Tue, 5 Jan 2021 21:42:18 +0100
Subject: [PATCH] stdenv: mute errors when failing to write env-vars

---
 pkgs/stdenv/generic/setup.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/stdenv/generic/setup.sh b/pkgs/stdenv/generic/setup.sh
index 4ff0a6caf760..7168ce4084c8 100644
--- a/pkgs/stdenv/generic/setup.sh
+++ b/pkgs/stdenv/generic/setup.sh
@@ -787,7 +787,7 @@ substituteAllInPlace() {
 # the environment used for building.
 dumpVars() {
     if [ "${noDumpEnvVars:-0}" != 1 ]; then
-        export >| "$NIX_BUILD_TOP/env-vars" || true
+        export 2>/dev/null >| "$NIX_BUILD_TOP/env-vars" || true
     fi
 }