I was looking for a Go library that provides CFG parsing (preferably not in the usual Chomsky form). Has anyone heard of anything, or should I write? :)
Do you know about goyacc ? Although this is not a library, but a code generator. In any case, it supports CFG, and IMO is a fairly standard way to solve such problems. (?)
I can't help you specifically with CFG, but Go Dashboard is a good central list of Go libraries.
When considering this for parsers, two look useful at first glance: