[jkarneges]

It is an interesting thought experiment to imagine how things might have played out if Rust had kept green threads.

I don't know if it would have changed the Rust vs Go story much. There'd still be the learning curve of the borrow checker, and many people using Go aren't necessarily doing a ton of concurrency.

The Rust vs C/C++ story on the other hand... If Rust had a bunch of extra runtime stuff and limited interop, I suspect it would not have been perceived as a serious replacement, which may have hindered adoption. At least when I selected a language for my highly concurrent network server, I only considered C, C++, and Rust.

I'll admit it's a fine line. I'm using async Rust, with an executor/reactor and all that jazz, and the end result may not be much different than if Rust had made those decisions for me. Having the power to make my own decisions is very appealing though. It's possible Go could have been a contender for my project if it wasn't such a limited language. And Mozilla's backing of Rust helped it vs other fringe options.