build failure -> rustc_codegen_nvvm(build)

[1617176084]

When I add this package
cuda_builder = { version = "0.2", path = "./Rust-CUDA/crates/cuda_builder" }
And compiled, and then they started a bunch of bugs, I had LLVM_ and CUDA installed

rustc_codegen_nvvm(build)

[RDambrosio016]

I may have forgotten to mention it in the guide but you must copy the rust-toolchain file to your own project root, that is because the codegen uses rustc internals so it cannot be stable until it is upstreamed in rustc