whatswrong.nix

let pkgs = import (builtins.fetchTarball {
    url = "https://github.com/NixOS/nixpkgs-channels/archive/nixos-18.03.tar.gz";
    sha256 = "0d9pkbax0phh392j6pzkn365wbsgd0h1cmm58rwq8zf9lb0pgkg2";
}) {
    config = {
        packageOverrides = pkgs: rec {
            binutils-unwrapped = pkgs.binutils-unwrapped
            .overrideAttrs (old: {
                name = "mybinutils";
                version = "2.29.1";
                src = (builtins.fetchurl {
                    url = "ftp://sourceware.org/pub/binutils/snapshots/binutils-2.29.1.tar.bz2";
                    sha256 = "05hj7is06dji2gkkn61n5fpx4l64059sjsbl4bddrsywybnzfhpm";
                });
           });
        };
    };
};

in pkgs.stdenv