From 50d1295123c7fa0cff88abfcbe2610f9a26878d7 Mon Sep 17 00:00:00 2001
From: mhucka <mhucka@google.com>
Date: Fri, 27 Feb 2026 03:26:01 +0000
Subject: [PATCH] Add another PyPI source for binary wheels

https://cibuildwheel.pypa.io/en/stable/faq/#building-with-numpy mentions
a trick to improving the chances of getting a precompiled binary wheel
of NumPy: add an additional index to tell pip where it can find
packages.
---
 pyproject.toml | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/pyproject.toml b/pyproject.toml
index b3d397cb..0e8a3b73 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -135,6 +135,14 @@ pytest -n auto -s -v {package}/qsimcirq_tests/qsimcirq_test.py &&
 mv /tmp/qsimcirq {package}
 """
 
+[[tool.cibuildwheel.overrides]]
+# Help increase the chances that pip will find binary wheels for NumPy.
+# See https://cibuildwheel.pypa.io/en/stable/faq/#building-with-numpy
+select = ["cp314*"]
+inherit.environment = "append"
+environment.PIP_EXTRA_INDEX_URL = "https://pypi.anaconda.org/scientific-python-nightly-wheels/simple/"
+environment.PIP_PRERELEASE = "allow"
+
 [tool.cibuildwheel.macos]
 before-build = """
 brew install -q libomp llvm@19 &&