Discover VS HeroicBashLauncher

Discord overlay doesn't exist in linux. I'm using Discover as a workaround.

If you know python you could maybe start by looking at how discover handles everything by reading its source code

There are applications like Discover for Discord. It is capable to render above everything else, even fullscreen games without taking any resources.

1) If you use Discord, install it and the Discover overlay. With the Deck's excellent output cancelling, you can comfortably chat while you play.

Python GTK Linux Example that works on Steam Deck: https://github.com/trigg/Discover

Discover Overlay: This lets you have an overlay for Discord, since Discord on Linux still has no overlay support of its own. It's a little janky, but being able to see who's talking and read what the people in text chat are saying is just an important part of being social online. I love being able to both play video games and hang out with friends simultaneously, so this is just about mandatory for me.

Can you utilize addtosteam.sh with this similar to how heroic did?

I've previously used Heroic Bash Launcher for that. It generates a script that opens the game in exactly the same way Heroic does, and you can then add the script as a non steam game.

The EUREKA moment came from a thread for CIV IV on a random Heroic Launcher Github thread. https://github.com/redromnon/HeroicBashLauncher/issues/38

Works for me with Lutris shortcuts and some native Linux games I have installed. Herioc shortcuts needs an extra step using Heroic Bash Launcher

You're probably better launching through heroic and not directly using proton. This project looks like it might add all your heroic games to steam automatically: https://github.com/redromnon/HeroicBashLauncher

Heroic Bash Launcher

Use Heroic Launcher (find in desktop mode via discover (flatpack)). Install Windows versions to take advantage of Steam/Proton. Sync saves using Heroic Launcher too (be careful the feature is currently in Beta, but working fine for me in D:OS). Install the shortcut in your steam library using Heroic Bash Launcher, job done.

For heroic installed games, i used https://github.com/redromnon/HeroicBashLauncher to add steam shortcuts for individual games.

But for Heroic, afaik you need this, though I am still working on the guide and can't 100% confirm.