libjack2: fix python 3.12 support

Backports the waf 2.0.26 update, which adds Python 3.12 support to the
build system.

pkgs/misc/jackaudio/default.nix

@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitHub, pkg-config, python3Packages, makeWrapper
+{ lib, stdenv, fetchFromGitHub, fetchpatch2, pkg-config, python3Packages, makeWrapper
 , libsamplerate, libsndfile, readline, eigen, celt
 , wafHook
 # Darwin Dependencies
@@ -46,6 +46,15 @@ stdenv.mkDerivation (finalAttrs: {
     aften AudioUnit CoreAudio Accelerate libobjc
   ];
 
+  patches = [
+    (fetchpatch2 {
+      # Python 3.12 support
+      name = "jack2-waf2.0.26.patch";
+      url = "https://github.com/jackaudio/jack2/commit/250420381b1a6974798939ad7104ab1a4b9a9994.patch";
+      hash = "sha256-M/H72lLTeddefqth4BSkEfySZRYMIzLErb7nIgVN0u8=";
+    })
+  ];
+
   postPatch = ''
     patchShebangs --build svnversion_regenerate.sh
   '';