Roc never plans to self host. We want roc the compiler in the long term to be as nice as possible for end users. A big part of that is as fast as possible. While roc can be fast, it can't compete with all the techniques that can be done in rust/zig/c/c++. It fundamentally is a higher level language to increase developer joy and reduce bugs. So it isn't the right tool when you are trying to reach the limits of hardware like this.