source+=('rankmirror.sh.diff')
b2sums+=('170770a9fc250fd917c409289f6bf06f889265d20324f50083d0a97e8772dc971c302c8a81a857b433015feb8d3fec6cf48231fdc57fc320d7d3f18aa0aa6ca7')

eval "$(
  declare -f prepare \
  | sed '
    $ i patch -p1 -i "${srcdir}/rankmirror.sh.diff"
  '
)"