anchor.diff: -{ stdenv, fetchurl, gmp }:
  +{ stdenv, fetchurl, patchelf, gmp }:
   
   let
     version = "20130715";
  
positive.code:     chmod u+x $(pwd)/../usr/bin/mllex
      chmod u+x $(pwd)/../usr/bin/mlyacc
      chmod u+x $(pwd)/../usr/bin/mlton
    '';
  
    doCheck = true;
  
negative.code: 
    sourceRoot = name;
  
    buildInputs = [ patchelf gmp ];
  
    makeFlags = [ "all-no-docs" ];
  
  