Step-by-step – Telegram Flatpak CentOS 8.x/Stream-8 Installation

Installing

2. 2. Setting Up Flatpak

   How to Setup Flatpak on CentOS 8

   Flatpak CentOS 8.x/Stream-8 Installation Guide

   Flatpak CentOS 8.x/Stream-8 Setup

3. 3. Installing Telegram

   Then to Install Telegram App on CentOS 8
   To Setup the Repo play:

   flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo

   For further Insight see the Flatpak Official Documentation.
   And after:

   flatpak install https://flathub.org/repo/appstream/org.telegram.desktop.flatpakref

   The Flatpak App Setup do Not need the sudo Command because then it Runs confined into a Sandbox.
   Authenticate to Update the Repos:
   
   Then Confirm with ‘y’ for Installation.
   And Wait patiently until the App is Downloaded, Built and Installed…
   The first Flatpak App Setup may be quite Large & Long because it need to Setup some Base Components.

4. 4. Launching Telegram

   Finally, Launch & Enjoy Telegram
   Use the Desktop Launcher for the GUI:

   
   Of from Shell with:

   flatpak run org.telegram.desktop

   Then Use your Mobile Phone Number to Login and Start Chatting: