curl -L http://iweb.dl.sourceforge.net/project/wkhtmltopdf/0.12.1/wkhtmltox-0.12.1_osx-carbon-i386.pkg > wk.pkg \
  && pkgutil --expand wk.pkg wk \
  && mkdir unwk \
  && (cd unwk && gunzip < ../wk/Payload | cpio -id) \
  && mkdir dest \
  && (cd dest && tar x) < unwk/usr/local/share/wkhtmltox-installer/app.tar.xz