From f6fcb9bc0d33e59b09d1b4b9e15d83260954f850 Mon Sep 17 00:00:00 2001
From: John Ericson <John.Ericson@Obsidian.Systems>
Date: Tue, 19 Sep 2017 19:11:29 -0400
Subject: [PATCH] stdenv: Turn on `set -x` if NIX_DEBUG >= 6

Why 6? It seems a decently high number, giving us room for more degrees
of debugging before the `set -x` sledgehammer without incurring a
mass-rebuild.
---
 pkgs/stdenv/generic/setup.sh | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/stdenv/generic/setup.sh b/pkgs/stdenv/generic/setup.sh
index 524caafc872..02da3829c5a 100644
--- a/pkgs/stdenv/generic/setup.sh
+++ b/pkgs/stdenv/generic/setup.sh
@@ -1,6 +1,10 @@
 set -eu
 set -o pipefail
 
+if (( "${NIX_DEBUG:-0}" >= 6 )); then
+    set -x
+fi
+
 : ${outputs:=out}