anchor.diff: -{ lib, stdenv, fetchurl, zlib, gd, texinfo4, makeWrapper, readline
  +{ lib, stdenv, fetchurl, makeWrapper, pkgconfig, texinfo
  +, cairo, gd, libcerf, pango, readline, zlib
   , withTeXLive ? false, texlive
   , withLua ? false, lua
   , emacs ? null
  
positive.code:        --run '. ${./set-gdfontpath-from-fontconfig.sh}'
    '';
  
    meta = with lib; {
      homepage = http://www.gnuplot.info/;
      description = "A portable command-line driven graphing utility for many platforms";
  
negative.code: , libXaw ? null
  , aquaterm ? false
  , withWxGTK ? false, wxGTK ? null
  , fontconfig ? null
  , gnused ? null
  , coreutils ? null
  