Steam in -steamos3 mode polls for SteamOS atomic OS updates via
steamos-update, steamos-update-rauc, steamos-atomupd-client. CachyOS
ships none of these (pacman handles rolling updates), so every poll
fires "YieldingApplyUpdateOS: OS update result: 2" and the GamepadUI
shows "Updater apply error: 2: null".
That alone is just a banner, but the first-run OOBE blocks on the
"Software updates" step waiting for a successful update result, so
users can't get past initial setup. Field-reported.
Dropping -steamos3 keeps -gamepadui (controller-friendly UI) without
the SteamOS-mode update polling. OS updates: sudo pacman -Syu.
- Add distros/cachyos image.yaml and helper files under files/
- Wire kernel packaging and --distro cachyos in build_image.sh
- Stage CachyOS artifacts in image-builder entrypoints; include cachyos in multi image
- Add boot/kexec-cachyos.sh and document in README
Co-authored-by: Cursor <cursoragent@cursor.com>
