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#!/bin/bash

PKG=$1

if [ -z $PKG ]; then
  echo "Specify package" >&2
  exit 1
fi

WDIR=$(mktemp --tmpdir -d demeta.XXXXXXXXXX)
pushd $WDIR >/dev/null

FILE=$(apt-get download $PKG --print-uris | cut -d\  -f2)
apt-get -qq download $PKG

CNTRL=$(ar p $FILE control.tar.xz | unxz | tar -x ./control)
DEPS=$(cat control | grep ^Depends | cut -d: -f2 | tr -d ,)

echo Will set as manually installed:
echo $DEPS
echo
echo Will remove:
echo $PKG

echo
echo -n 'Type y to continue: '
read LINE
if [ "z$LINE" == "zy" ]; then
  sudo apt-mark manual $DEPS
  sudo apt-get purge $PKG
else
  echo Abandoned.
fi

popd >/dev/null
rm -rf $WDIR