python3Packages.torch-bin: only include Linux-specific dependencies when building on Linux

This fixes a build regression on aarch64-darwin that has prevented torch-bin from being buildable since the merge of #227420.

pkgs/development/python-modules/torch/bin.nix

@@ -40,18 +40,19 @@ in buildPythonPackage {
 
   nativeBuildInputs = [
     addOpenGLRunpath
+    patchelf
+  ] ++ lib.optionals stdenv.isLinux [
     autoPatchelfHook
     cudaPackages.autoAddOpenGLRunpathHook
-    patchelf
   ];
 
-  buildInputs = with cudaPackages; [
+  buildInputs = lib.optionals stdenv.isLinux (with cudaPackages; [
     # $out/${sitePackages}/nvfuser/_C*.so wants libnvToolsExt.so.1 but torch/lib only ships
     # libnvToolsExt-$hash.so.1
     cuda_nvtx
-  ];
+  ]);
 
-  autoPatchelfIgnoreMissingDeps = [
+  autoPatchelfIgnoreMissingDeps = lib.optionals stdenv.isLinux [
     # This is the hardware-dependent userspace driver that comes from
     # nvidia_x11 package. It must be deployed at runtime in
     # /run/opengl-driver/lib or pointed at by LD_LIBRARY_PATH variable, rather
@@ -79,7 +80,7 @@ in buildPythonPackage {
     rm -rf $out/bin
   '';
 
-  postFixup = ''
+  postFixup = lib.optionalString stdenv.isLinux ''
     addAutoPatchelfSearchPath "$out/${python.sitePackages}/torch/lib"
 
     patchelf $out/${python.sitePackages}/torch/lib/libcudnn.so.8 --add-needed libcudnn_cnn_infer.so.8