{stdenv, fetchurl, pcre}: derivation
  { name = "gnugrep-2.5.1"
  , system = stdenv.system
  , builder = ./builder.sh
  , src = fetchurl
      { url = ftp://ftp.nluug.nl/pub/gnu/grep/grep-2.5.1.tar.bz2
      , md5 = "ddd99e2d5d4f4611357e31e97f080cf2"
      }
  , stdenv = stdenv
  , pcre = pcre
  }