From 74f8b047fb418cc544389a9d362d92d9776f8143 Mon Sep 17 00:00:00 2001
From: Thomas Krijnen <t.krijnen@gmail.com>
Date: Sat, 25 Oct 2025 15:40:08 +0200
Subject: [PATCH] osx compat

---
 src/ifcopenshell-python/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ifcopenshell-python/Makefile b/src/ifcopenshell-python/Makefile
index 13fb5d596c..78305f19d0 100644
--- a/src/ifcopenshell-python/Makefile
+++ b/src/ifcopenshell-python/Makefile
@@ -78,7 +78,7 @@ test:
 
 .PHONY: test-parallel
 test-parallel:
-	@NPROCS=$$(nproc); \
+	@NPROCS=$$(nproc 2>/dev/null || sysctl -n hw.ncpu); \
 	pytest -p no:pytest-blender -n $$NPROCS test --ignore=test/util/test_shape_builder.py
 
 .PHONY: test-mathutils