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euri-iso/docs/overlay-root.md
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c-ludenberg 20a78051d6 docs: overhaul to match current repo reality (DE/DM selectors, SDDM pixie theme, overlays, offline installer, CI)
- index/installer/launcher: release facts, SDDM theme (pixie on master), init/DE selectors, NoExtract for Install Artix entry
- packages: branding pkg ships offline+online settings (no packagechooser.conf fallback), drop antergos-sddm-theme, correct repo index names
- overlays/overlay-root/overlay-live: root-overlay is live-session only, real file trees, symlinked settings.conf, commit reference
- desktop-environments/wallpapers: remove No Desktop option, video wallpaper via layan-theme + Smart Video Wallpaper Reborn
- ci/development/building: three workflows incl. ai-moderator, IA upload disabled (if:false)
- byode: new page documenting the SteamOS-inspired offline installer
- AGENTS.md/openrc: OpenRC was an installer-only dinit conflict; manual rc-update add works
2026-07-31 21:41:17 +02:00

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Markdown

---
title: Root Overlay
layout: default
parent: Overlays
nav_order: 1
---
# Root Overlay
Files in `iso-profiles/antergos/root-overlay/` are merged into the live rootfs — the filesystem the ISO boots. root-overlay settings (os-release, issue, SDDM config, wallpapers) therefore apply to the live session too.
> **Important:** The Calamares online install does **not** copy root-overlay files to the installed system. The installed system is built fresh from packages via `basestrap`. Anything you want on installed systems must ship as a package (e.g. `antergos-release` for os-release, `antergos-layan-theme` for the SDDM theme), not live in root-overlay.
## Contents
```
root-overlay/
├── etc/
│ ├── default/
│ │ └── grub # GRUB default options
│ ├── issue / issue.live # Login banners
│ ├── lsb-release # LSB metadata
│ ├── os-release # "Antergos NeXT" in the live session
│ ├── pacman.conf # Includes [antergos-pkgs] repo
│ ├── sddm.conf # SDDM general config (Wayland compositor, theme dirs)
│ ├── sddm.conf.d/
│ │ └── kde_settings.conf # SDDM autologin + theme (live only)
│ ├── skel/.config/autostart/
│ │ ├── antergos-wallpaper.desktop # First-login wallpaper setter
│ │ └── pipewire.desktop # PipeWire autostart
│ └── xdg/autostart/
│ └── antergos-wallpaper.desktop # System-wide wallpaper autostart
├── usr/
│ ├── bin/systemd-machine-id-setup # Keeps live machine-id stable
│ ├── lib/os-release # Mirrors etc/os-release
│ ├── local/bin/set-antergos-wallpaper.sh
│ └── share/
│ ├── icons/hicolor/{128x128,256x256}/apps/antergos-logo.png
│ ├── pixmaps/antergos-logo.png
│ └── plasma/wallpapers/org.kde.image/contents/config/main.xml
```
## Key files
### `etc/pacman.conf`
Adds the `[antergos-pkgs]` custom repo so the live session can install our packages during the Calamares online install. `SigLevel = Optional TrustAll` is needed because our packages are not signed with official Artix keys.
### `etc/sddm.conf.d/kde_settings.conf`
Sets the live session to **autologin as user `antergos`** with `Session=plasma.desktop` (Wayland). Also sets `HaltCommand`/`RebootCommand` to loginctl (dinit-compatible) and the theme to `Current=antergos` (the bundled Antergos theme).
> This file only affects the **live session**. On installed systems the `antergos-layan-theme` package owns `kde_settings.conf` with `Current=pixie` — see [Installer — SDDM theme](installer).
### `etc/skel/.config/autostart/antergos-wallpaper.desktop`
Runs the wallpaper setter on first login. Uses `X-KDE-autostart-phase=2` so it runs after Plasma has initialized — necessary because Plasma overwrites the wallpaper config from `/etc/skel/` on first login. A matching copy lives at `etc/xdg/autostart/` for system-wide autostart.
### `usr/local/bin/set-antergos-wallpaper.sh`
Configures the **Smart Video Wallpaper Reborn** Plasma plugin (`luisbocanegra.smart.video.wallpaper.reborn`) via `qdbus6` to play `/usr/share/backgrounds/antergos/antergos-wallpaper.mp4` muted, then writes `~/.config/antergos-wallpaper-set` as a marker so it only runs once. See [Wallpapers](wallpapers).