anchor.diff:    tree }:
   
   let
  -  version = "3.14.2";
  +  version = "3.14.4";
   
     # Dependencies should match the ones in:
     # https://github.com/erlang/rebar3/blob/${version}/rebar.lock
  
positive.code:   };
    parse_trans = fetchHex {
      pkg = "parse_trans";
      version = "3.3.0";
      sha256 = "17ef63abde837ad30680ea7f857dd9e7ced9476cdd7b0394432af4bfc241b960";
    };
    providers = fetchHex {
      pkg = "providers";
      version = "1.8.1";
      sha256 = "e45745ade9c476a9a469ea0840e418ab19360dc44f01a233304e118a44486ba0";
    };
    relx = fetchHex {
      pkg = "relx";
      version = "4.1.0";
      sha256 = "b94a3f96697a479ee5217a853345e0f4977bdf40d3c040af0d3d80fadad82af4";
    };
    ssl_verify_fun = fetchHex {
      pkg = "ssl_verify_fun";
      version = "1.1.6";
      sha256 = "bdb0d2471f453c88ff3908e7686f86f9be327d065cc1ec16fa4540197ea04680";
    };
  
    hex_core = fetchHex {
      pkg = "hex_core";
      version = "0.7.1";
      sha256 = "05c60411511b6dc79affcd99a93e67d71e1b9d6abcb28ba75cd4ebc8585b8d02";
    };
  in
  stdenv.mkDerivation rec {
  
negative.code:     cp --no-preserve=mode -R ${providers} _checkouts/providers
      cp --no-preserve=mode -R ${relx} _checkouts/relx
      cp --no-preserve=mode -R ${ssl_verify_fun} _checkouts/ssl_verify_fun
  
      # Bootstrap script expects the dependencies in _build/default/lib
      # TODO: Make it accept checkouts?
  