Flatpak, AppImage or Homebrew variant?

SteamOS is becoming more popular, especially since the Steam Maschine now. On my end, I have been tinkering a lot under SteamOS on my self-built setup, but I used Homebrew (brew.sh) to install additional things.

I had heared of this particular project as part of ChimeraOS and I quite like the idea of managing my Steam from the confort of my laptop - especially for non-Steam Store games.

This is why I would like to ask for alternative distribution versions that would allow the Chimera app to run on SteamOS. Flatpak is available by default, and could write to `~/.config/systemd/user` to set up the required units. AppImage is even less restricted. Homebrew would require installation first, but has a built in service manager that could help. I use that one for `keyd` to map a USB 2.4ghz remote to the proper buttons.

No files, tests, or entry points are named. Start by reviewing the existing distribution setup and how the Chimera app configures user services; done means an agreed Flatpak, AppImage, or Homebrew variant can run on SteamOS with the required service setup.

Written by the indexing model from the issue text.