#!/bin/sh

set -e

if $(cat "/etc/apt/sources.list" | grep -q "wheezy-backports"); then
    echo "Adding pin preferences for wheezy-backports"
    cat > "/etc/apt/preferences.d/wheezy-backports" << EOF
Package: dh-python dh-systemd devscripts
Pin: release a=wheezy-backports
Pin-Priority: 999
EOF
else
    if [ -f /etc/apt/preferences.d/wheezy-backports ]; then
        rm -vf /etc/apt/preferences.d/wheezy-backports
    fi
fi