anchor.diff: -{ stdenv, fetchurl, python, pyqt5, sip_4_16, poppler, pkgconfig, libpng
  +{ stdenv, fetchurl, python, pyqt5, sip_4_16, poppler_utils, pkgconfig, libpng
   , imagemagick, libjpeg, fontconfig, podofo, qt5, icu, sqlite
   , pil, makeWrapper, unrar, chmlib, pythonPackages, xz, libusb1, libmtp
   , xdg_utils
  
positive.code:   nativeBuildInputs = [ makeWrapper pkgconfig ];
  
    buildInputs =
      [ python pyqt5 sip_4_16 poppler libpng imagemagick libjpeg
        fontconfig podofo qt5 pil chmlib icu sqlite libusb1 libmtp xdg_utils
        pythonPackages.mechanize pythonPackages.lxml pythonPackages.dateutil
        pythonPackages.cssutils pythonPackages.beautifulsoup pythonPackages.pillow
  
negative.code: 
    installPhase = ''
      export HOME=$TMPDIR/fakehome
      export POPPLER_INC_DIR=${poppler_utils}/include/poppler
      export POPPLER_LIB_DIR=${poppler_utils}/lib
      export MAGICK_INC=${imagemagick}/include/ImageMagick
      export MAGICK_LIB=${imagemagick}/lib
      export FC_INC_DIR=${fontconfig}/include/fontconfig
  