[coopierez]

> Then you update your compiler source code to use the new gofast keyword and recompile it again. But now you have a problem - how is someone going to build the new compiler from source if their build of the Zig compiler doesn't already support gofast?

Thank you, this is what made me understand the core issue at hand here. I was confused as to why they needed to keep updating the "old" compiler once they had written the self-hosted one.