On: Show HN: G-Fu – a pragmatic Lisp embedded in Go

You would have to wrap the call in a g-fu prim [0] for now. As for dynamically loading libraries, the plan is to implement g-fu libraries that call out as plugins. I have yet to dig into reflection to see how much effort an FFI would take.

[0] https://github.com/codr7/g-fu/blob/master/v1/src/gfu/abc.go