{ config, pkgs, lib, flakeRoot, ... }:
let
  repoWallpaperDir = flakeRoot + "/assets/conf/desktop/wallpaper";
  userRelRoot = "nixos_conf/wallpaperstuff";
  userAbsRoot = "${config.home.homeDirectory}/${userRelRoot}";
  # The video file you want as wallpaper (must exist under the synced dir)
  userVideoPath = "${userAbsRoot}/videos/myWallpaper.mp4";
  # (keep your existing approach: sync the repo wallpaper dir to the user dir)
  repoWallpapersOnly = lib.cleanSourceWith {
  src = repoWallpaperDir;
  filter = path: type: true;
  };
in
{
  home.packages = [
  pkgs.mpvpaper
  pkgs.mpv
  ];
  # Sync repo wallpapers (including videos/) into ~/nixos_conf/wallpaperstuff
  home.file."${userRelRoot}" = {
  source = repoWallpapersOnly;
  recursive = true;
  };
  systemd.user.services.mpvpaper-wallpaper = {
  Unit = {
  Description = "Video wallpaper (mpvpaper)";
  After = [ "graphical-session.target" ];
  PartOf = [ "graphical-session.target" ];
  };
  Service = {
  Type = "simple";
  # -p auto-pause saves resources when the wallpaper surface is hidden.
  # '*' applies to all outputs.
  # Stretch-to-fill (cover) behavior:
  # --panscan=1.0 fills the entire output by cropping (no letterboxing).
  # If you literally want distortion-stretch (ignore aspect ratio), use --keepaspect=no instead.
  ExecStart = ''
    ${pkgs.mpvpaper}/bin/mpvpaper \
    -p \
    -o "no-audio --loop-file=inf --no-terminal --really-quiet --panscan=1.0 --keepaspect=yes" \
    '*' "${userVideoPath}"
  '';
  Restart = "on-failure";
  RestartSec = 1;
  };
  Install = {
  WantedBy = [ "graphical-session.target" ];
  };
  };
}