Document apt pinning configuration
I'm currently using
byzantium
cat <<EOF > /etc/apt/preferences.d/u-p
Explanation: Dont install staging packages by default
Package: *
Pin: release n=byzantium-updates-proposed
Pin-Priority: 99
EOF
cat <<EOF > /etc/apt/sources.list.d/u-p.list
deb http://repo.pureos.net/pureos byzantium-updates-proposed main
EOF
apt update
apt install -t byzantium-updates-proposed gnome-screenshot
Edited by Guido Gunther