From 81fc11717d4af14b6a44203cd71a601fc3831435 Mon Sep 17 00:00:00 2001
From: Matthew Roeschke <10647082+mroeschke@users.noreply.github.com>
Date: Mon, 12 Sep 2022 10:00:07 -0700
Subject: [PATCH] Backport PR #48490: CI: Use -j1 for python-dev build to avoid
 flaky build error

---
 .github/workflows/python-dev.yml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/python-dev.yml b/.github/workflows/python-dev.yml
index 46cb564b494f6..8b97c3821efe5 100644
--- a/.github/workflows/python-dev.yml
+++ b/.github/workflows/python-dev.yml
@@ -80,9 +80,10 @@ jobs:
         python -m pip install python-dateutil pytz cython hypothesis==6.52.1 pytest>=6.2.5 pytest-xdist pytest-cov pytest-asyncio>=0.17
         python -m pip list
 
+    # GH 47305: Parallel build can cause flaky ImportError from pandas/_libs/tslibs
     - name: Build Pandas
       run: |
-        python setup.py build_ext -q -j2
+        python setup.py build_ext -q -j1
         python -m pip install -e . --no-build-isolation --no-use-pep517
 
     - name: Build Version