{ fetchurl, stdenv, perl }:

stdenv.mkDerivation rec {
  name = "sloccount-2.26";

  src = fetchurl {
    url = "http://www.dwheeler.com/sloccount/${name}.tar.gz";
    sha256 = "0ayiwfjdh1946asah861ah9269s5xkc8p5fv1wnxs9znyaxs4zzs";
  };

  buildInputs = [ perl ];

  patchPhase = ''
    for file in *
    do
      substituteInPlace "$file" --replace "/usr/bin/perl" "${perl}/bin/perl"
    done
  '';

  configurePhase = ''
    sed -i "makefile" -"es|PREFIX[[:blank:]]*=.*$|PREFIX = $out|g"
  '';

  doCheck = true;
  checkPhase = ''HOME="$TMPDIR" PATH="$PWD:$PATH" make test'';

  preInstall = ''
    ensureDir "$out/bin"
    ensureDir "$out/share/man/man1"
    ensureDir "$out/share/doc"
  '';

  meta = {
    description = "SLOCCount, a set of tools for counting physical Source Lines of Code (SLOC)";

    longDescription = ''
      This is the home page of "SLOCCount", a set of tools for
      counting physical Source Lines of Code (SLOC) in a large number
      of languages of a potentially large set of programs.  This suite
      of tools was used in my papers More than a Gigabuck: Estimating
      GNU/Linux's Size and Estimating Linux's Size to measure the SLOC
      of entire GNU/Linux distributions, and my essay Linux Kernel
      2.6: It's Worth More!  Others have measured Debian GNU/Linux and
      the Perl CPAN library using this tool suite.
    '';

    license = "GPLv2+";

    homepage = http://www.dwheeler.com/sloccount/;
  };
}