anchor.diff:  { stdenv, fetchurl, erlang, rebar, makeWrapper, coreutils, curl, bash }:
   
   let
  -  version = "1.0.5";
  +  version = "1.1.1";
   in
   stdenv.mkDerivation {
     name = "elixir-${version}";
   
     src = fetchurl {
       url = "https://github.com/elixir-lang/elixir/archive/v${version}.tar.gz";
  -    sha256 = "1f419pzlcgqx68rygwwyp2hzh4vgp0avjydd84dpa7finckc5raw";
  +    sha256 = "0shh5brhcrvbvhl4bw0fs2y5llw7i97khkkglygx30ncvd7nwz9v";
     };
   
     buildInputs = [ erlang rebar makeWrapper ];
  
positive.code:     done
  
      substituteInPlace $out/bin/mix \
            --replace "/usr/bin/env elixir" "${coreutils}/bin/env $out/bin/elixir"
    '';
  
    meta = with stdenv.lib; {
  
negative.code: 
      license = licenses.epl10;
      platforms = platforms.unix;
      maintainers = [ maintainers.the-kenny maintainers.havvy ];
    };
  }
  