Debug Source Generators

[DevAM-Tools]

Tools like Visual Studio 2022 oder Rider allows to debug Source Generators. This is not possible with vscode as far as I know. I would love to see this feature.

[AbhitejJohn]

Greg has a workaround for this here: #8504 (comment)

I don't know how feasible this is -- the language service and compiler are going to load your source generator which means you really need a separate instance of VS / VS Code that just has your source generator opened.
Your best bet is probably to add something like:

#pragma warning disable RS1035 // Do not use APIs banned for analyzers
// Wait for the debugger to attach if the environment variable is set
if (Environment.GetEnvironmentVariable("DEBUG_MY_SOURCE_GENERATOR")?.Equals("1") ?? false)
{
while (!Debugger.IsAttached)
{
Thread.Sleep(100);
}
}
#pragma warning restore RS1035 // Do not use APIs banned for analyzers

Then open two instances of VS Code (or VS if you are on Windows).