Documenting a net8.0 project when using msbuild.exe

[Zastai]

I am running into the following issue:

• I have a Sandcastle project documenting a C# project targeting net6.0 and net8.0, with several NuGet packages in use
• the Sandcastle tools are brought in from NuGet
• when using dotnet build, this works fine
• when using msbuild.exe however, the GenerateReflectionInfo step fails with
  SHFB : error BE0043: Unexpected error detected in last build step. See build log for details.
  • the log has MRefBuilder : error : Unresolved assembly reference: <assembly name for dependency from NuGet package> required by <assembly being documented

It looks like SHFB is applying a .NET Framework style dependency resolution (which would require all dependencies to be in the same folder) to a .NET library (which has a My.Assembly.deps.json alongside My.Assembly.dll file describing where dependencies are located).

I would love to leave the old .NET Framework implementation of MSBuild behind, but unfortunately, Visual Studio still uses that one, so it needs to work too.

Setting CopyLocalLockFileAssemblies to true in the project being documented resolves this error, but is not a solution - it's highly undesirable to duplicate dependency DLLs all over the place.