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I the mean-time I Googled and found this go-trace package [1] : “trace extends the features of the Go execution tracer”. Which is maybe the kind of thing that I’m looking for because it promises that the execution tracing info might be available in real-time without having to run the go tool trace command and navigate a web page, etc. However, this package seems out-of-date 
Anybody know of any similar packages, or how to achieve similar functionality, effectively by-passing go tool trace?