gistfile1.txt

  nixpkgs = {
    config = {
      allowUnfree = true;
      packageOverrides = pkgs:
      { linux_latest = pkgs.linux_4_15.override {
          extraConfig =
            ''
              MLX5_CORE_EN y
            '';
        };
      };
    };
  };

  boot.kernelPackages = pkgs.linuxPackages_4_15;