How to enable new pprof labels features?

[mgabeler-lee-6rs]

The v0.41.0 release notes mention a feature I'm very interested in: labeling goroutines.

I've updated delve & the vscode extension:

$ dlv version
Delve Debugger
Version: 1.22.0
Build: $Id: 61ecdbbe1b574f0dd7d7bad8b6a5d564cce981e9 $
$ code --list-extensions --show-versions | grep go
golang.go@0.41.0

And updated my code to add labels to my goroutines, but nothing is showing in the Call Stack view for them. The delve code / PR implies that the DAP client needs to explicitly tell it which ones to show: https://github.com/go-delve/delve/blob/f32818c9e36e6c6e84a07131c08f994ee38fa156/service/dap/command.go#L67-L72

However, unlike, say, hideSystemGoroutines, I can't find anything in the vscode-go extension that would set this flag.

Am I missing something, or are the release notes misleading here and this feature isn't actually ready for use in the extension yet?

[stefanhaller]

You can add a showPprofLabels key to your launch configuration, and it does work. It will look like it doesn't in the editor, but it does.

It looks like we need a commit similar to 44e2d4d to make it known to the editor. @suzmue, could you make that change? I'm not familiar enough with this project to feel comfortable contributing a PR.

[mgabeler-lee-6rs]

Thank you, this works! It would be awesome if this can be a delve setting like the other one you reference, instead of needing to be added to every launch config.

FWIW, it wasn't even clear to me from the docs that I could put delve settings in the launch config at all.

[gm0stache]

opened a feature request to add the pprof labels clearly visible in the UI of the call stack section headers of the debugger.
give it a vote/thumbs up if you would also like to have this: #3247