@xigoi How many time do you need to compile your project during the day? `cargo check` is usually enough for a basic cycle.
I don't get the obsession with the compilation speed anyway, perhaps I don't work with big enough projects. I'm pumped for recent IC and IR developments not because of the compilation speed, but because it promises better and more reliable tooling and other improvements in regards to the way _I_ write the code (such as view types), not how compiler processes it. In regards to tooling, one-line config edit for tab-completion and go-to-definition in Vim/Helix is what I want.