Assemblies in the DLLs folder are not loaded properly

[slozier]

Assemblies in the DLLs folder are not loaded properly. This only occurs for .NET Core since the assembly probing occurs differently.

Changing InitializeExtensionDLLs to use AddReferenceToFile loads the assembly into memory (as I tried in #523), however when the sqlite3 module calls AddReference("IronPython.SQLite") the assembly still fails to resolve.

[slide]

I read around that you have to use AssemblyLoadContext.Default.LoadXXX from System.Runtime.Loader have you tried that?

[slozier]

Haven't tried it, but it's something I'd like to avoid since it appears to be a .NET Core specific API and I'd like to be able to switch to .NET Standard 2.1 assemblies eventually.