From 27f9348ee7648f87db0c37fdccf087a676d3264f Mon Sep 17 00:00:00 2001
From: panicgh <79252025+panicgh@users.noreply.github.com>
Date: Sun, 21 Nov 2021 21:40:48 +0000
Subject: [PATCH] wafHook: always enable parallel building (#136641)

Follow the same pattern as used in the cmake setup hook to assume
`enableParallelBuilding=1` when unset by the user. This makes wafHook
honor `NIX_BUILD_CORES`. See #136368 and #136641.
---
 pkgs/development/tools/build-managers/wafHook/setup-hook.sh | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pkgs/development/tools/build-managers/wafHook/setup-hook.sh b/pkgs/development/tools/build-managers/wafHook/setup-hook.sh
index 439350c3abc2..6cea8fcc2ea8 100644
--- a/pkgs/development/tools/build-managers/wafHook/setup-hook.sh
+++ b/pkgs/development/tools/build-managers/wafHook/setup-hook.sh
@@ -21,6 +21,11 @@ wafConfigurePhase() {
     echoCmd 'configure flags' "${flagsArray[@]}"
     python "$wafPath" "${flagsArray[@]}"
 
+    if ! [[ -v enableParallelBuilding ]]; then
+        enableParallelBuilding=1
+        echo "waf: enabled parallel building"
+    fi
+
     runHook postConfigure
 }