Tool author here. I think the same overall approach I described here should work for Go as well:

https://news.ycombinator.com/item?id=36653954

One would just need a machine readable data source for Go package APIs, and would plug it into the Trustfall query engine. I'm not a Go expert but most languages I've worked with have something like that.

If you might be interested in building this for Go, ping me and I'd be happy to help you hit the ground running!

https://pkg.go.dev/golang.org/x/exp/apidiff might be of interest