From 9eb9a9904c00bcae2760abd8038c2c6e2088769d Mon Sep 17 00:00:00 2001
From: Ben Wolsieffer <benwolsieffer@gmail.com>
Date: Tue, 17 May 2022 19:26:20 -0400
Subject: [PATCH] python3Packages.setuptools: add distutils patch to support
 cross-compilation

This is mostly the same patch applied to stdlib distutils, except rebased
and reworked a bit. This fixes cross-compilation of Python packages with
C extension modules now that setuptools uses bundled distutils.

(cherry picked from commit 2294dace6ae30d095719a6dd8413242ec61ca8e5)
---
 pkgs/development/python-modules/setuptools/default.nix | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/pkgs/development/python-modules/setuptools/default.nix b/pkgs/development/python-modules/setuptools/default.nix
index 1d9592022d16f..772d9c79c2b11 100644
--- a/pkgs/development/python-modules/setuptools/default.nix
+++ b/pkgs/development/python-modules/setuptools/default.nix
@@ -1,6 +1,7 @@
 { stdenv
 , buildPythonPackage
 , fetchFromGitHub
+, fetchpatch
 , python
 , bootstrapped-pip
 , lib
@@ -27,6 +28,14 @@ let
     patches = [
       ./tag-date.patch
       ./setuptools-distutils-C++.patch
+      # Use sysconfigdata to find headers. Fixes cross-compilation of extension modules.
+      # https://github.com/pypa/distutils/pull/145
+      (fetchpatch {
+        url = "https://github.com/pypa/distutils/commit/aed7294b7b0c228cc0666a8b04f2959bf310ab57.patch";
+        hash = "sha256-/9+TKv0nllBfnj48zcXLrOgyBj52dBIVbrpnIaQ4O84=";
+        stripLen = 2;
+        extraPrefix = "setuptools/_distutils/";
+      })
     ];
 
     buildPhase = ''