From b4c68c920d4804eaa0fef53b78f12cafd6343a99 Mon Sep 17 00:00:00 2001
From: 97littleleaf11 <97littleleaf11@gmail.com>
Date: Sat, 27 Feb 2021 06:59:24 +0800
Subject: [PATCH] Add Apple Silicon support when building wheels

---
 misc/build_wheel.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/misc/build_wheel.py b/misc/build_wheel.py
index 13633405bf774..bf27f11d2c256 100644
--- a/misc/build_wheel.py
+++ b/misc/build_wheel.py
@@ -45,6 +45,13 @@ def create_environ(python_version: str) -> Dict[str, str]:
     # Don't build 32-bit wheels
     env['CIBW_SKIP'] = "*-manylinux_i686 *-win32"
 
+    # Apple Silicon support
+    # When cross-compiling on Intel, it is not possible to test arm64 and 
+    # the arm64 part of a universal2 wheel. Warnings will be silenced with
+    # following CIBW_TEST_SKIP
+    env['CIBW_ARCHS_MACOS'] = "x86_64 arm64"
+    env['CIBW_TEST_SKIP'] = "*-macosx_arm64"
+
     env['CIBW_BUILD_VERBOSITY'] = '1'
 
     # mypy's isolated builds don't specify the requirements mypyc needs, so install