Dependency Conflict with System.Runtime.CompilerServices.Unsafe and MessagePack in a .NET Project

[JGProg]

Hello everyone,

I am encountering an issue in my framework 4.8 C# project related to FitSharp and MessagePack. Here are the details:

1. Project Context:

   • My project targets either .NET Framework 4.8
   • I am using FitSharp, and I am trying run tests using Runner.exe.
   • Dependencies are managed through NuGet.

2. Specific Problem:

   • A dependency (possibly transitively through MessagePack or FitSharp) requires System.Runtime.CompilerServices.Unsafe version **>= 6.0.0`.
   • However, another dependency (or configuration) enforces version 4.0.0, which is incompatible.

3 . Exact Error Message:

__EXCEPTION__:System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.TypeInitializationException: The type initializer for 'MessagePackSerializerOptionsDefaultSettingsLazyInitializationHelper' threw an exception. ---> System.TypeInitializationException: The type initializer for 'MessagePack.Resolvers.StandardResolver' threw an exception. ---> System.TypeInitializationException: The type initializer for 'MessagePack.Internal.StandardResolverHelper' threw an exception. ---> System.TypeInitializationException: The type initializer for 'MessagePack.Resolvers.DynamicUnionResolver' threw an exception. ---> System.TypeInitializationException: The type initializer for 'MessagePack.MessagePackSecurity' threw an exception. ---> System.IO.FileNotFoundException: Could not load file or assembly 'System.Runtime.CompilerServices.Unsafe, Version=4.0.4.1, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.

4. Observation:
   • If I write a standalone program and directly reference the DLLs, it works perfectly.
   • This suggests the issue is related to dependency resolution when using NuGet and not the DLL itself.

   Thank for help.

[sqeezy]

Can you elaborate on your test setup? I don't quite understand how you manage the dependency management via Nuget while running the tests with Runner.exe.