No controls using Pico8 (retro8) core in Retroarch on a Steam Deck

[dbasinge]

INo controls are working in Pico8 (retro8) core in Retroarch on a Steam Deck.

[ghzeni]

This is likely the cause: https://www.lexaloffle.com/bbs/?tid=140447

It can be fixed by adding merge_joysticks 2 to the config.txt file on pico8, but I don't know how to add it to this core..

merge_joysticks
This is an option in config.txt, that treats the first n controllers as if they were a single merged controller. This is useful in situations where you want to use the built-in buttons on a handheld device, but then later plug in a controller (e.g. when you connect it to a TV), but want that controller to also be used for the same player. To set up PICO-8 for such a system, use merge_joysticks 2 in config.txt.