CS0433 Compiler Error: 'NotNullWhenAttribute' exists in both 'Mapster' and 'System.Runtime'

[RainbowWolfer]

Description

When using Mapster (v10.0.4) in a .NET 7 project, a CS0433 compilation error occurs because the NotNullWhenAttribute is exposed publicly by the Mapster package, which collides with the built-in attribute in System.Runtime.

Steps to Reproduce

1. Create a minimal csproj file targeting net7.0:

<Project Sdk="Microsoft.NET.Sdk">

	<PropertyGroup>
		<TargetFramework>net7.0</TargetFramework>
	</PropertyGroup>

	<ItemGroup>
		<PackageReference Include="Mapster" Version="10.0.4" />
	</ItemGroup>

</Project>

2. Add a simple test class utilizing the attribute:

using System.Diagnostics.CodeAnalysis;

namespace MapperTest;

public class Tests
{
	public Tests()
	{

	}

	protected virtual bool TryLoadAssembly(
		string filePath,
		[NotNullWhen(true)] out string assembly
	)
	{
		assembly = null;
		return false;
	}
}

3. Build the project.
   Observed Behavior
   The build fails with the following compiler error:

error CS0433: The type 'NotNullWhenAttribute' exists in both 'Mapster, Version=10.0.4.0, Culture=neutral, PublicKeyToken=2f39883af23c29a8' and 'System.Runtime, Version=7.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'

[DocSvartz]

Hi @RainbowWolfer, it fixed in https://www.nuget.org/packages/Mapster/10.0.6.
Thanks!

[DocSvartz]

This should have been fixed in new release version.
If your issue is still active, please reopen it or create new issue.
Thanks!