Install irony-mode by entering the following commands in the terminal:
sudo apt update sudo apt install irony-mode
Description:
Transition Package, irony-mode to elpa-irony
The irony-mode addon has been elpafied. This dummy package helps ease the transition from irony-mode to elpa-irony and is safe to remove.
Homepage: https://github.com/Sarcasm/irony-mode/
Version: 1.2.0-4
Section: universe/x11