Include staged macOS native binary when packing

Author: KSemenenko

src/MLXSharp/MLXSharp.csproj

@@ -15,8 +15,11 @@
   </ItemGroup>
 
   <PropertyGroup>
-    <MLXSharpMacNativeBinary Condition="'$(MLXSharpMacNativeBinary)' == ''">$(MSBuildProjectDirectory)..\..\native\build\libmlxsharp.dylib</MLXSharpMacNativeBinary>
-    <MLXSharpMacNativeDestination>..\MLXSharp.Native\runtimes\osx-arm64\native\libmlxsharp.dylib</MLXSharpMacNativeDestination>
+    <MLXSharpProjectDirectory>$(MSBuildThisFileDirectory)</MLXSharpProjectDirectory>
+    <MLXSharpNativeRuntimeRoot>$(MLXSharpProjectDirectory)..\MLXSharp.Native\runtimes</MLXSharpNativeRuntimeRoot>
+    <MLXSharpMacNativeBinary Condition="'$(MLXSharpMacNativeBinary)' == ''">$(MLXSharpProjectDirectory)..\..\native\build\libmlxsharp.dylib</MLXSharpMacNativeBinary>
+    <MLXSharpMacNativeDestination>$(MLXSharpNativeRuntimeRoot)\osx-arm64\native\libmlxsharp.dylib</MLXSharpMacNativeDestination>
+    <MLXSharpMacNativeDestinationDir>$([System.IO.Path]::GetDirectoryName('$(MLXSharpMacNativeDestination)'))</MLXSharpMacNativeDestinationDir>
     <MLXSharpSkipMacNativeValidation Condition="'$(MLXSharpSkipMacNativeValidation)' == ''">false</MLXSharpSkipMacNativeValidation>
   </PropertyGroup>
 
@@ -28,11 +31,24 @@
                         Condition="Exists('$(MLXSharpMacNativeBinary)')" />
     </ItemGroup>
 
+    <MakeDir Directories="$(MLXSharpMacNativeDestinationDir)"
+             Condition="'$(MLXSharpMacNativeDestinationDir)' != ''" />
+
     <Copy SourceFiles="@(_MacNativeSource)"
           DestinationFiles="$(MLXSharpMacNativeDestination)"
           SkipUnchangedFiles="true"
           Condition="'@(_MacNativeSource)' != ''" />
 
+    <ItemGroup>
+      <None Include="$(MLXSharpMacNativeDestination)"
+            Condition="Exists('$(MLXSharpMacNativeDestination)')">
+        <Pack>true</Pack>
+        <PackagePath>runtimes/osx-arm64/native/%(Filename)%(Extension)</PackagePath>
+        <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+        <Link>runtimes\osx-arm64\native\%(Filename)%(Extension)</Link>
+      </None>
+    </ItemGroup>
+
     <Error Condition="'$(MLXSharpSkipMacNativeValidation)' != 'true' and !Exists('$(MLXSharpMacNativeDestination)')"
            Text="libmlxsharp.dylib is missing. Build the native library or supply MLXSharpMacNativeBinary before packing." />
   </Target>