#!/bin/sh
set -e
if [ "$1" = "upgrade" ]; then
# Remove older deprecated themes. Can be removed post 20.04
if dpkg --compare-versions "$2" lt-nl 3.29.90-2ubuntu1; then
update-alternatives --remove gdm3.css /usr/share/gnome-shell/theme/ubuntu.css || true
elif dpkg --compare-versions "$2" lt-nl 3.36.0-2ubuntu1; then
update-alternatives --remove gdm3.css \
/usr/share/gnome-shell/theme/gnome-shell.css || true
fi
fi