From 3e7992ba67ff4d6424879f2636857866229c952c Mon Sep 17 00:00:00 2001
From: Randy Eckenrode <randy@largeandhighquality.com>
Date: Thu, 9 Nov 2023 20:44:18 -0500
Subject: [PATCH] python3Packages.aggdraw: fix build with clang 16

Clang 16 defaults to C++17, which disallows the `register` storage class
specifier. Upstream has fixed this on a maintenance branch, but it is
not yet available in a release.
---
 pkgs/development/python-modules/aggdraw/default.nix | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/pkgs/development/python-modules/aggdraw/default.nix b/pkgs/development/python-modules/aggdraw/default.nix
index 9d1e0ee96bab..ef44979c4394 100644
--- a/pkgs/development/python-modules/aggdraw/default.nix
+++ b/pkgs/development/python-modules/aggdraw/default.nix
@@ -1,5 +1,6 @@
 { lib
 , fetchFromGitHub
+, fetchpatch
 , buildPythonPackage
 , packaging
 , setuptools
@@ -23,6 +24,14 @@ buildPythonPackage rec {
     hash = "sha256-2yajhuRyQ7BqghbSgPClW3inpw4TW2DhgQbomcRFx94=";
   };
 
+  patches = [
+    # Removes `register` storage class specifier, which is not allowed in C++17.
+    (fetchpatch {
+      url = "https://github.com/pytroll/aggdraw/commit/157ed49803567e8c3eeb7dfeff4c116db35747f7.patch";
+      hash = "sha256-QSzpO90u5oSBWUzehRFbXgZ1ApEfLlfp11MUx6w11aI=";
+    })
+  ];
+
   nativeBuildInputs = [
     packaging
     setuptools