Custom Discord Rich Presence for Linux

python3 (tested with 3.11)
pypresence pypi
psutil pypi
pip or pipx (manual install only, pipx recommended)

If you're using Gentoo Linux you can install this from my overlay:
# eselect repository enable xarblu-overlay
# emerge net-misc/linux-discord-rpc

Install via pipx: $ pipx install https://github.com/xarblu/linux-discord-rpc.git

Install via pip:
$ pip install --user https://github.com/xarblu/linux-discord-rpc.git

Optionally install the systemd-service (you may need to adjust the ExecStart= line)
$ wget https://raw.githubusercontent.com/xarblu/linux-discord-rpc/main/extra/linux-discord-rpc.service -O ~/.config/systemd/user/linux-discord-rpc.service

Should be called via the aforementioned symlinks.
rpc-daemon is the daemon handling game detection and the communication with Discord
rpc-cli is a simple cli to set/get/clear a configured game manually

Configuration is done under $XDG_CONFIG_HOME/linux-discord-rpc/games.conf and (currently) uses ini syntax (this might get changed to toml because ini is somewhat funky with case-sesitive strings).

A config looks like this:

## each section corresponds to a game
## this is what you would use with "rpc-cli set <game>" 
## required
# [game]

## discord application id to use for this game
## required get this at https://discord.com/developers/applications
# appid =

## image to use for this game
## optional - defaults to section name
# image =

## pretty name
## optional - defaults to section name
# pretty = 

## name of the games executable to search for auto detection
## optional - if unset don't do auto detection
# exe = 

## selecting a type gives extra info in your rich presence
## one of {default, proton, switch}
## optional - falls back to default
# type = 

For a proper config you need to setup applications in discords developer portal.
There create a new application, give it a name and copy the application id to your config.
The next step is image ressources. Add those under Rich Presence -> Art Assets.
If you use a type that isn't default setting you should have an image corresponding
to that type uploaded (it will be used as an indicator).