These are installation instructions for RetroPie, standard GNU/Linux is not supported yet.
Before this application is comepletely finished, installation will have to be done via SSH. You only need to copy and paste commands.
Of course you know this already, just open a terminal and type:
ssh pi@[IP-Address]
The default password is raspberry, the IP address can be found in the RetroPie menu on the main menu.
Follow the official documentation :D
You need to make sure you have a recent retropie-setup version. The install script requires commit 872e2ae or newer, from february 27, 2019. If you have an older version update the retropie-setup script first.
Download the packagefile
wget -O "${HOME}/RetroPie-Setup/scriptmodules/ports/piegalaxy.sh" https://raw.githubusercontent.com/sigboe/pie-galaxy/master/scriptmodule.sh
Run the package installer
sudo "${HOME}/RetroPie-Setup/retropie_packages.sh" piegalaxy
Follow the configuration steps before you disconnect from SSH
Currently we need to logg in by going to an URL in your webbrowser, then copy pasting a token back.
/opt/retropie/ports/piegalaxy/wyvern ls
Copy the URL to your webbrowser, and log in. After you logg in you will get to a blank site The token is in the URL of the webbrowser, copy everything after code= and paste it back into the SSH client.
If you managed to do it correctly, you should see a list of all your games.
Restart EmulationStation, or Reboot, and the program will show up in EmulationStation under Ports.