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wallpaper: live desktop + lockscreen from ~/wallpaper
mpvpaper renders a random video/image from ~/wallpaper on the background
layer, rotated daily; noctalia's own wallpaper is disabled to let it show
through. lockscreen picks from the same folder. Seeds a moewalls pixel-art
sunset starter. Drops the unused feh fetchWallpaper on ignavia.
author
lassulus
date
(Jul 25, 2026, 11:28 PM CEST)
commit
d845c9f0
d845c9f01d81cbfae347ff0b7ccf054b5af73202
parent
1dc76423
1dc76423c852b9df2cec86c0127fe6ea655639c1
+115
-8
+15
-4
tools/lockscreen/flake-module.nix
+15
-4
tools/lockscreen/flake-module.nix
···
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pkgs.mpvpaper
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];
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text = ''
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VIDEO=$(find "$HOME"/lockscreens/*.{mp4,webm} | shuf -n 1)
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DURATION=$(ffprobe -v error -show_entries format=duration -of csv=p=0 "$VIDEO" 2>/dev/null | cut -d. -f1)
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START=$((RANDOM % ''${DURATION:-300}))
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exec swaylock-plugin --command "mpvpaper -o \"no-audio loop start=$START\" '*' \"$VIDEO\"" "$@"
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# Random lock background (video or image) from the shared
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# ~/wallpaper folder. Falls back to a plain locker when the
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# folder is empty, so the screen still locks.
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FILE=$(find "$HOME/wallpaper" -type f \( \
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-iname '*.mp4' -o -iname '*.webm' -o -iname '*.mkv' -o -iname '*.mov' -o \
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-iname '*.jpg' -o -iname '*.jpeg' -o -iname '*.png' -o -iname '*.gif' -o -iname '*.webp' \
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\) 2>/dev/null | shuf -n 1 || true)
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if [ -z "$FILE" ]; then
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exec swaylock-plugin "$@"
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fi
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DUR=$(ffprobe -v error -show_entries format=duration -of csv=p=0 "$FILE" 2>/dev/null | cut -d. -f1)
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case "$DUR" in "" | *[!0-9]*) DUR=1 ;; esac
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if [ "$DUR" -lt 1 ]; then DUR=1; fi
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START=$((RANDOM % DUR))
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exec swaylock-plugin --command "mpvpaper -o \"no-audio loop start=$START\" '*' \"$FILE\"" "$@"
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'';
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}).overrideAttrs
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{ passthru.usage = builtins.readFile ./usage.kdl; };
+4
tools/noctalia-shell/flake-module.nix
+4
tools/noctalia-shell/flake-module.nix
···
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# Mirror noctalia's dark mode toggle to the system theme.
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darkModeChange = ''if [ "$1" = "true" ]; then switch-theme dark; else switch-theme light; fi'';
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};
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# The live desktop wallpaper is rendered by mpvpaper on the
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# background layer (see 2configs/desktops/sway/wallpaper.nix), so
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# noctalia's own wallpaper is turned off to let it show through.
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wallpaper.enabled = false;
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};
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settingsPatches = [
+33
tools/wallpaper/flake-module.nix
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tools/wallpaper/flake-module.nix
···
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{
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perSystem =
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{ pkgs, ... }:
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{
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packages.wallpaper =
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(pkgs.writeShellApplication {
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name = "wallpaper";
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runtimeInputs = [
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pkgs.coreutils
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pkgs.findutils
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pkgs.mpvpaper
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];
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text = ''
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# Pick a random wallpaper (video or image) from ~/wallpaper and
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# render it on every output via mpvpaper. Long-running: this
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# process *is* the wallpaper. `-p` auto-pauses playback while the
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# wallpaper is fully hidden to save power.
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FILE=$(find "$HOME/wallpaper" -type f \( \
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-iname '*.mp4' -o -iname '*.webm' -o -iname '*.mkv' -o -iname '*.mov' -o \
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-iname '*.jpg' -o -iname '*.jpeg' -o -iname '*.png' -o -iname '*.gif' -o -iname '*.webp' \
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\) 2>/dev/null | shuf -n 1)
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if [ -z "$FILE" ]; then
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echo "wallpaper: no wallpapers found in ~/wallpaper" >&2
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exit 0
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fi
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exec mpvpaper -p \
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-o "no-audio loop-file=inf image-display-duration=inf hwdec=auto-safe" \
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'*' "$FILE"
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'';
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}).overrideAttrs
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{ passthru.usage = builtins.readFile ./usage.kdl; };
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};
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}
+2
tools/wallpaper/usage.kdl
+2
tools/wallpaper/usage.kdl
+4
-3
2configs/desktops/sway/default.nix
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-3
2configs/desktops/sway/default.nix
···
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imports = [
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../lib/wayland.nix
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./noctalia.nix
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./wallpaper.nix
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];
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programs.sway = {
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enable = true;
···
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)
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}
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# screenlock (via noctalia's lock screen)
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bindsym $mod+F11 exec ${lib.getExe self.packages.${pkgs.system}.noctalia-shell} ipc call lockScreen lock
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bindsym $mod+l exec ${lib.getExe self.packages.${pkgs.system}.noctalia-shell} ipc call lockScreen lock
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# screenlock (random live video/image from ~/wallpaper via swaylock-plugin)
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bindsym $mod+F11 exec ${lib.getExe' pkgs.systemd "systemctl"} --user start lock.target
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bindsym $mod+l exec ${lib.getExe' pkgs.systemd "systemctl"} --user start lock.target
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# kill window (xkill-like)
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mode "kill" {
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2configs/desktops/sway/wallpaper.nix
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2configs/desktops/sway/wallpaper.nix
···
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{
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pkgs,
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lib,
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config,
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self,
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...
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}:
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let
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inherit (config.users.users.mainUser) name home group;
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wallpaperDir = "${home}/wallpaper";
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wallpaper = self.packages.${pkgs.system}.wallpaper;
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in
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{
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# Seed ~/wallpaper with the starter live wallpaper (pixel-art road/trees/
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# sunset from moewalls, transcoded to 1080p30 without audio). `C` copies it
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# once when missing, so the user can freely add or delete wallpapers
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# afterwards without it reappearing.
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systemd.tmpfiles.rules = [
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"d ${wallpaperDir} 0755 ${name} ${group} -"
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"C ${wallpaperDir}/road-trees-sunset-sky-pixel.mp4 0644 ${name} ${group} - ${./wallpapers/road-trees-sunset-sky-pixel.mp4}"
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];
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# Live wallpaper: mpvpaper renders a random file from ~/wallpaper on the
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# background layer. noctalia's own wallpaper is disabled (see the noctalia
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# wrapper) so this shows through.
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systemd.user.services.wallpaper = {
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description = "Live desktop wallpaper (mpvpaper)";
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partOf = [ "sway-session.target" ];
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wantedBy = [ "sway-session.target" ];
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after = [ "sway-session.target" ];
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serviceConfig = {
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Type = "simple";
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ExecStart = lib.getExe wallpaper;
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Restart = "on-failure";
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RestartSec = 2;
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};
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};
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# Rotate to a fresh random wallpaper once a day by restarting the service.
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systemd.user.services.wallpaper-rotate = {
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description = "Rotate the live desktop wallpaper";
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serviceConfig = {
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Type = "oneshot";
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ExecStart = "${lib.getExe' pkgs.systemd "systemctl"} --user restart wallpaper.service";
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};
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};
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systemd.user.timers.wallpaper-rotate = {
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description = "Daily live wallpaper rotation";
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wantedBy = [ "timers.target" ];
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timerConfig = {
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OnCalendar = "daily";
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Persistent = true;
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};
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};
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}
2configs/desktops/sway/wallpapers/road-trees-sunset-sky-pixel.mp4
2configs/desktops/sway/wallpapers/road-trees-sunset-sky-pixel.mp4
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