Polari is an Internet Relay Chat (IRC) client.
Polari Activity embeds Polari for the Sugar desktop.
In Sugar, start Terminal and use git to clone to your Activities folder;
git clone https://github.com/sugarlabs/PolariActivity.git ~/Activities/Polari.git
On Debian and Ubuntu systems, install the dependencies;
apt install python3-openssl python3-service-identity python3-twisted
Start the activity from the Sugar Home View, set a nickname, and press Connect.
Use git to pull a new version;
(cd ~/Activities/Polari.git && git pull)
Polari Activity depends on Python, Sugar Toolkit for GTK+ 3, Python OpenSSL, Python Service Identity, and GTK+ 3.
Polari Activity is not packaged by Linux distributions.