-# Set up tmux.
-apt-get -y install tmux
-
-# Set up weechat, OTR, bitlbee.
-apt-get install weechat-plugins python-potr bitlbee
-cp config/systemfiles/weechat /etc/systemd/system/weechat.service
+# Set up screen, weechat, OTR, bitlbee.
+apt-get -y install screen weechat-plugins python-potr bitlbee
+cp config/systemfiles/weechat.service /etc/systemd/system/weechat.service