From e125b70c8b6ba34feb0220ddb08f106ea87ad566 Mon Sep 17 00:00:00 2001
From: Randy Eckenrode <randy@largeandhighquality.com>
Date: Thu, 11 Jul 2024 19:31:42 -0400
Subject: [PATCH] darwin.apple_sdk: add libs.simd stub

Making it fail at build time allows it to be used unversioned with `overrideSDK`. Unlike the QuickTime framework, which is present in the base SDK and was later removed, simd was added later.
---
 pkgs/os-specific/darwin/apple-sdk/default.nix | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/pkgs/os-specific/darwin/apple-sdk/default.nix b/pkgs/os-specific/darwin/apple-sdk/default.nix
index a3d1df0867a9..7298eba6c50a 100644
--- a/pkgs/os-specific/darwin/apple-sdk/default.nix
+++ b/pkgs/os-specific/darwin/apple-sdk/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, cpio, pbzx, pkgs, lib, darwin-stubs, print-reexports }:
+{ stdenv, stdenvNoCC, fetchurl, cpio, pbzx, pkgs, lib, darwin-stubs, print-reexports }:
 
 let
   # sadly needs to be exported because security_tool needs it
@@ -263,6 +263,15 @@ in rec {
         ln -s libsandbox.1.tbd $out/lib/libsandbox.tbd
       '';
     };
+
+    simd = stdenvNoCC.mkDerivation {
+      name = "apple-lib-simd";
+
+      preferLocalBuild = true;
+      allowSubstitutes = false;
+
+      buildCommand = "echo 'simd library not available in the 10.12 SDK'; exit 1";
+    };
   };
 
   overrides = super: {