Turned my Debian into SteamOS :)

deb http://repo.steampowered.com/steamos alchemist main contrib non-free deb-src http://repo.steampowered.com/steamos alchemist main contrib non-free

# apt-get update # apt-get install valve-archive-keyring # apt-get update

# apt-get -t alchemist install linux-image-686

# apt-get -t alchemist install linux-image-amd64

# apt-get -t alchemist install steamos-base-files steam steam-launcher steamos-compositor steamos-modeswitch-inhibitor valve-wallpapers

# dpkg -l *nvidia* | grep ^ii | awk '{print $2}' | xargs apt-get -t alchemist install

I managed to run SteamOS session on my Debian desktop. Here is the guide (use at your own risk. it worked on my Debian unstable and will probably work even better on wheezy, but of course it may cause problems now or in the future):1. Add SteamOS repository.Create a file /etc/apt/sources.list.d/steamos.list with the following content:2. (Optional) Set up APT pinning.(Many usual packages in SteamOS are just rebuilt packages from Debian, so I thought I need only relevant packages from this repository)Add the following lines to the file /etc/apt/preferences:This will allow SteamOS packages to update, but not to replace existing packages from Debian.3. Install keyring:This package contains the GPG key that signs other packages. APT will ask for confirmation to install a package with unknown signature.3. Install SteamOS kernel and packages:or(For amd64 systems, use steam:i386 instead of steam)4. (Probably optional) Upgrade video drivers (nvidia)5. Run steam, login and install client updates if needed.6. Reboot and choose SteamOS as your Xsession.7. Play :)I tested Tetrobot & Co game, but all linux games should run just fine.