llama-cpp: require newer apple sdk (fix darwin) (#442216)

pkgs/by-name/ll/llama-cpp/package.nix

@@ -30,7 +30,9 @@
   metalSupport ? stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64 && !openclSupport,
   vulkanSupport ? false,
   rpcSupport ? false,
+  apple-sdk_14,
   curl,
+  llama-cpp,
   shaderc,
   vulkan-headers,
   vulkan-loader,
@@ -119,6 +121,7 @@ effectiveStdenv.mkDerivation (finalAttrs: {
     ++ optionals rocmSupport rocmBuildInputs
     ++ optionals blasSupport [ blas ]
     ++ optionals vulkanSupport vulkanBuildInputs
+    ++ optionals metalSupport [ apple-sdk_14 ]
     ++ [ curl ];
 
   preConfigure = ''
@@ -173,25 +176,31 @@ effectiveStdenv.mkDerivation (finalAttrs: {
   # the tests are failing as of 2025-08
   doCheck = false;
 
-  passthru.updateScript = nix-update-script {
-    attrPath = "llama-cpp";
-    extraArgs = [
-      "--version-regex"
-      "b(.*)"
-    ];
+  passthru = {
+    tests = {
+      metal = llama-cpp.override { metalSupport = true; };
+    };
+    updateScript = nix-update-script {
+      attrPath = "llama-cpp";
+      extraArgs = [
+        "--version-regex"
+        "b(.*)"
+      ];
+    };
   };
 
-  meta = with lib; {
+  meta = {
     description = "Inference of Meta's LLaMA model (and others) in pure C/C++";
     homepage = "https://github.com/ggml-org/llama.cpp";
-    license = licenses.mit;
+    license = lib.licenses.mit;
     mainProgram = "llama";
-    maintainers = with maintainers; [
+    maintainers = with lib.maintainers; [
+      booxter
       dit7ya
       philiptaron
       xddxdd
     ];
-    platforms = platforms.unix;
+    platforms = lib.platforms.unix;
     badPlatforms = optionals (cudaSupport || openclSupport) lib.platforms.darwin;
     broken = metalSupport && !effectiveStdenv.hostPlatform.isDarwin;
   };