python310Packages.soxr: Fix aarch64 build

There are patches that gate certain code parts for aarch64 platforms,
that are not part of the soxr release.

pkgs/development/python-modules/soxr/default.nix

@@ -25,7 +25,8 @@ buildPythonPackage rec {
     owner = "dofuuz";
     repo = "python-soxr";
     rev = "refs/tags/v${version}";
-    hash = "sha256-Kpw+KeXkkZlNLq8BMNMKtgBxe5Wb71jNaXZFmjjP34o=";
+    fetchSubmodules = true;
+    hash = "sha256-g8YS5YgK1uK1kKtR/wn8x5DAUVY/hYmuMIgjgJAC8pM=";
   };
 
   SETUPTOOLS_SCM_PRETEND_VERSION = version;
@@ -38,11 +39,6 @@ buildPythonPackage rec {
     setuptools-scm
   ];
 
-  postPatch = ''
-    tar -xf ${libsoxr.src} -C libsoxr
-    mv libsoxr/soxr-*/* libsoxr/
-  '';
-
   pythonImportsCheck = [
     "soxr"
   ];