{
  nixpkgs = {
    hostPlatform = {
      system = "x86_64-linux";
      gcc = {
        arch = "x86-64-v3";
        tune = "generic";
      };
    };

    # These patches repair tests and bundled dependencies that are sensitive
    # to the compiler flags used by the x86-64-v3 package set.
    overlays = [ (import ./patches) ];
  };
}