anchor.diff: -{ stdenv, fetchurl, pkgconfig, perl, yacc, bootstrap_cmds
  +{ stdenv, fetchurl, pkgconfig, perl, yacc
   
   # Optional Dependencies
   , libedit ? null, readline ? null, ncurses ? null, libverto ? null
  
positive.code:     find $out/bin -type f | grep -v 'krb5-config' | xargs rm
    '';
  
    enableParallelBuilding = true;
  
    meta = {
      description = "MIT Kerberos 5";
      homepage = http://web.mit.edu/kerberos/;
  
negative.code:     cd src
    '';
  
    nativeBuildInputs = [ pkgconfig perl yacc ];
    buildInputs = [ optOpenssl optLibverto optOpenldap ]
      ++ cryptoInputs ++ tlsInputs ++ lineParserInputs;
  
  