Embedded IronPython debugging with breakpoints

[matthias-vietz]

Our codebase is written mostly in C# with some scripting capabilities using IronPython 3.4. Until recently we based the project on the outdated .Net Framework 4.8 but made the move to .Net 8 recently.

One odd thing is bugging us: With .Net Framework as a target we could load the python script files in Visual Studio and set breakpoints which nicely triggered when the script was executed. After the shift to .Net 8 this does not work any longer.

I created a minimal working example to confirm this behavior:

using IronPython.Hosting;
using Microsoft.Scripting.Hosting;
using Microsoft.Scripting.Runtime;
using System;
using System.Collections.Generic;

namespace ScriptTest
{
    internal class Program
    {
        static void Main(string[] args) {
            ScriptEngine pythonEngine = null;
            ScriptScope pythonScope = null;

            Dictionary<string, object> options = new Dictionary<string, object>();
            options["Debug"] = ScriptingRuntimeHelpers.True;

            pythonEngine = Python.CreateEngine(options);
            pythonScope = pythonEngine.CreateScope();

            ScriptSource pythonSrc = pythonEngine.CreateScriptSourceFromFile(@".\Test.py");
            CompiledCode compiled = pythonSrc.Compile();
            compiled.Execute(pythonScope);
        }
    }
}

with the following very simple Test.py file:
print('Test')

One thing I noticed is that with the .Net Framework 4.8 version a symbol "file" called Snippets.debug.scripting is loaded a soon as the Python script is executed. This does not happen in the .Net 8 version.
Just to be sure it is not a problem introduced by .Net 8 I also tried .Net 6 with the same result.

Any ideas how to get breakpoints working with .Net 8? Maybe this is just some Visual Studio setting but I found not clue yet.