Valve has been a big proponent of Linux gaming, and now the company is investing in Android support on Linux. It’s already possible to run Android in a Linux container through Waydroid, but Valve has developed a new fork – and it has officially named it Lepton.
Last month, news broke that Valve would soon support Android games on Steam. This was thanks to a sighting in Steam app changelogs for Walkabout Mini Golf, which added an APK file. The VR title is currently available on the Meta Quest (which runs on a custom version of Android), and may run through the Lepton compatibility layer for Valve’s upcoming Steam Frame VR headset, which runs the company’s Linux-based operating system, SteamOS.
That exists! It’s called fex, they’re using it in the steam frame, but there are apps to do it for android already
Close! Fex is an x86 -> ARM emulator that runs on ARM Linux, not Android.
With this and the proton compatibility layer, you could, theoretically, run Windows x86 applications on a Linux phone.