28allday
19fd794b6b
Single-script builder (nosignal.sh) that turns a stock Arch Linux ISO into a fully-offline installer for a themed Hyprland + caelestia (Quickshell) desktop: matching SDDM greeter, Btrfs/Limine bootable snapshots, chwd-style GPU detection, and a curated "os updates" layer (keybind cheatsheet, settings panels, system polish, on-box management skill). See README.md. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
67 lines
2.5 KiB
Bash
Executable file
67 lines
2.5 KiB
Bash
Executable file
#!/bin/bash
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# sddm-theme-sync — regenerate the SDDM "caelestia" theme's colours and
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# background from the desktop's live caelestia scheme, so the login screen
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# matches the current wallpaper/palette. Run as root (the installer runs it
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# once; re-run any time after changing wallpaper):
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# sudo sddm-theme-sync
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set -euo pipefail
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THEME=/usr/share/sddm/themes/caelestia
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if [[ $EUID -ne 0 ]]; then
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echo "Error: run as root (sudo sddm-theme-sync)" >&2
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exit 1
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fi
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command -v jq >/dev/null 2>&1 || { echo "Error: jq is required" >&2; exit 1; }
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[[ -d "$THEME" ]] || { echo "Error: theme not installed at $THEME" >&2; exit 1; }
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# The desktop user whose scheme/wallpaper to mirror.
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U="${SUDO_USER:-}"
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if [[ -z "$U" || "$U" == "root" ]]; then
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U=$(loginctl list-sessions --no-legend 2>/dev/null | awk '$3 != "root" && $3 != "sddm" && $3 != "" { print $3; exit }')
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fi
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[[ -n "$U" ]] || { echo "Error: cannot determine the desktop user" >&2; exit 1; }
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H=$(getent passwd "$U" | cut -d: -f6)
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SCHEME="$H/.local/state/caelestia/scheme.json"
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WALLPATH="$H/.local/state/caelestia/wallpaper/path.txt"
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[[ -f "$SCHEME" ]] || { echo "Error: $SCHEME not found (no caelestia scheme yet)" >&2; exit 1; }
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c() { jq -r ".colours.$1 // empty" "$SCHEME"; }
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BASE=$(c background); SC=$(c surfaceContainer); SCH=$(c surfaceContainerHigh)
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TEXT=$(c onSurface); SUB=$(c onSurfaceVariant); OUT=$(c outlineVariant)
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PRI=$(c primary); ONPRI=$(c onPrimary); ERR=$(c error)
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[[ -n "$BASE" && -n "$PRI" && -n "$TEXT" ]] || { echo "Error: scheme.json missing expected colours" >&2; exit 1; }
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# Background: copy the current wallpaper into the theme (greeter runs as the
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# sddm user and cannot read the user's home).
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BG_LINE="background=backgrounds/wallpaper.png"
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if [[ -f "$WALLPATH" ]]; then
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WALL=$(cat "$WALLPATH")
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if [[ -f "$WALL" ]]; then
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EXT="${WALL##*.}"
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install -d -m 0755 "$THEME/backgrounds"
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rm -f "$THEME"/backgrounds/wallpaper.*
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install -m 0644 "$WALL" "$THEME/backgrounds/wallpaper.$EXT"
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BG_LINE="background=backgrounds/wallpaper.$EXT"
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fi
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fi
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cat > "$THEME/theme.conf" << EOF
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# Generated by sddm-theme-sync from $SCHEME — do not edit by hand.
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[General]
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$BG_LINE
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base=#$BASE
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surfaceContainer=#$SC
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surfaceContainerHigh=#$SCH
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text=#$TEXT
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subtext=#$SUB
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outline=#$OUT
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primary=#$PRI
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onPrimary=#$ONPRI
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error=#$ERR
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fontFile=/etc/xdg/quickshell/caelestia/assets/google-sans-flex/GoogleSansFlex-VariableFont_GRAD,ROND,opsz,slnt,wdth,wght.ttf
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fontFallback=Rubik
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EOF
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echo ":: SDDM theme synced to $U's scheme (takes effect at the next greeter)"
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