From 480f4bf44ed52a2a856a8e6f372a06e58c4dc9c4 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Sun, 19 Nov 2017 11:49:42 +0530
Subject: [PATCH] Build script should not fail on python without threading

---
 setup.py | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/setup.py b/setup.py
index d5874d473..e4c8d628f 100755
--- a/setup.py
+++ b/setup.py
@@ -11,7 +11,6 @@ import shutil
 import subprocess
 import sys
 import sysconfig
-from multiprocessing import cpu_count
 
 base = os.path.dirname(os.path.abspath(__file__))
 build_dir = os.path.join(base, 'build')
@@ -270,7 +269,11 @@ def emphasis(text):
 
 
 def parallel_run(todo, desc='Compiling {} ...'):
-    num_workers = max(1, cpu_count())
+    try:
+        from multiprocessing import cpu_count
+        num_workers = max(1, cpu_count())
+    except Exception:
+        num_workers = 2
     items = list(todo.items())
     workers = {}
     failed = None