[gen2brain]

This is an older thinkpad I am using, 4 cores, 16G of ram. LLVM is now dependency you cannot get rid of. That is painfull, but in the morning, after several hours it is usually done. Rust is LLVM plus I am not sure what, really painfull. And Gentoo also forces many different arches and flags for some reason, use flags are masked, you cannot easily disable them.

[estebank]

That sounds similar to the hardware on my T460 (2 cores, 4 threads, 16G). Would you consider cloning the repo and building it with the same command as my other comment? I'm really intrigued if the issue is the hardware/platform or "just" the Gentoo configuration or something else that doesn't affect the default build process.