anchor.diff: -{ stdenv, fetchurl, erlang, rebar, makeWrapper, coreutils }:
  +{ stdenv, fetchurl, erlang, rebar, makeWrapper, coreutils, curl, bash, cacert }:
   
   let
     version = "1.0.0";
  
positive.code: 
      substituteInPlace Makefile \
        --replace "/usr/local" $out
    '';
  
    postFixup = ''
  
negative.code:     for f in $out/bin/*
      do
        wrapProgram $f \
        --prefix PATH ":" "${erlang}/bin:${coreutils}/bin:${curl}/bin:${bash}/bin" \
        --set CURL_CA_BUNDLE "${cacert}/etc/ca-bundle.crt"
      done
    '';
  
  