[CharlieDigital]

    > That way, I was able to use debugger to understand AST provided by Roslyn and quickly iterate.

Interesting; would love to see a video of your workflow and process.

With VSC, I found that I had to do some "hacks" to drop output as comments into a generated file so I could see what was happening.

[dgpy]

General usage is as in this short video: https://streamable.com/3oqxhf

`QueryGeneratorTestUtil.GenerateCompileAndAssert` internally uses `Microsoft.CodeAnalysis.CSharp.CSharpCompilation.Create()` and `Microsoft.CodeAnalysis.MSBuild.MSBuildWorkspace.Create()`. I get an interactive, debuggable source generator development environment this way. Same as you, initially I used "comments as debugging" hacks but above way is way more efficient.