Compiling the Linux Kernel with clang/llvm

According to e.g. phoronix, it should be easy to build the mainline kernel with llvm/clang now. How would I go about trying this in nixpkgs / has anybody tried this already?

Not sure if that Clang and/or LLVM are available yet somewhere. But if it would be, and it is the default clang version in nixpkgs, you would be able to test using:

let pkgs = import <nixpkgs> {}; in pkgs.linux.override {stdenv = pkgs.clangStdenv; }