Gamescope no longer respects SDL_VIDEODRIVER=x11

[imavlr]

With the latest update of gamescope on Arch, I seemingly can no longer force gamescope to run the X11 client instead of the gamescope-wl client.

My motivation for doing so is that discord is unable to listen to keyboard hotkeys when Wayland windows are focused. Therefore, running gamescope in an Xwayland window lets all my games get around this issue, however, with the latest version of gamescope on Arch Linux, I can no longer do so by setting SDL_VIDEODRIVER=x11.

Has this been removed completely, or is there a new way to force it to run x11?