Valve actually ships "stable ABI" Linux runtimes that Linux games and Proton are built against, so that they don't have to rely on distribution packages, simila

Valve actually ships "stable ABI" Linux runtimes that Linux games and Proton are built against, so that they don't have to rely on distribution packages, similarly to Flatpak. They renew them every few years but they stay stable so that games built against a specific runtime keep working. https://github.com/ValveSoftware/steam-runtime https://github.com/ValveSoftware/steam-runtime