anchor.diff:      "--enable-imagefilters"
       "--with-rcdir=no"
       "--with-shell=${stdenv.shell}"
  -    "--with-test-font-path=/path-does-not-exist"
  +    "--with-test-font-path=${dejavu_fonts}/share/fonts/truetype/DejaVuSans.ttf"
     ];
   
     makeFlags = [ "CUPS_SERVERBIN=$(out)/lib/cups" "CUPS_DATADIR=$(out)/share/cups" "CUPS_SERVERROOT=$(out)/etc/cups" ];
  
positive.code:     '';
  
    enableParallelBuilding = true;
    doCheck = false; # fails 4 out of 6 tests
  
    meta = {
      homepage = "http://www.linuxfoundation.org/collaborate/workgroups/openprinting/cups-filters";
  
negative.code: { lib, stdenv, fetchurl, pkg-config, cups, poppler, poppler_utils, fontconfig
  , libjpeg, libpng, perl, ijs, qpdf, dbus, avahi
  , makeWrapper, coreutils, gnused, bc, gawk, gnugrep, which, ghostscript
  , mupdf, dejavu_fonts, liblouis
  }:
  
  let
  