for ((i=${#source[@]}; i>0; i--)); do
  if [ "${source[${i}]}" = "http://www.bay12games.com/dwarves/df_${_pkgver}_linux.tar.bz2" ]; then
    break;
  fi
done
source[${i}]="http://www.bay12games.com/dwarves/df_${_pkgver}_linux32.tar.bz2"
sha256sums[${i}]='347736edcd10a2506a29ea2acadaa27c2ad019f13f453830f141006d8ea72806'