Retrosmc

First log into your osmc installation via ssh:

• disclaimer: after many attempts and experimentation, this method simply doesn't work. If a gaming/streaming combo box is desired, it's best to go with installing the Kodi package on RetroPie.

$ ssh osmc@your.device.ip.here

password hint: osmc

You'll have better luck installing retrosmc if you enable the swap file.

$ sudo touch /enable_swap
$ sudo reboot

First, stop the media center. This will stop the media center and free up even more resources.

$ sudo systemctl stop mediacenter

Next download the installer:

$ wget https://github.com/mcobit/retrosmc/blob/master/install-retrosmc.sh

After downloading, make it executable and run the script:

$ chmod +x install-retrosmc.sh
$ ./install-retrosmc.sh

Select the first option. The installer should check and download some packages, then go through the process of installing RetroPie. The installer should mention that the user osmc isn't part of the input group; agree to add it. You should now be at the RetroPie-Setup main menu. Choose the first option for a Basic Install, then Yes to start the install.

When done, diable the swap and reboot your device.

$ sudo rm /enable_swap
$ sudo reboot