modules/darwin/random-wallpaper.nix

b33f5b96e8b659a28e29d7df3fa63669b1e7b316 · 1.2 KB · 40 lines raw

1 { config, lib, pkgs, ... }:
2 let
3 cfg = config.local.randomWallpaper;
4 script = pkgs.writeShellApplication {
5 name = "set-random-wallpaper";
6 runtimeInputs = [ pkgs.coreutils pkgs.findutils ];
7 text = ''
8 set -euo pipefail
9 img=$(find "${cfg.directory}" \
10 -type f \( -iname '*.jpg' -o -iname '*.jpeg' -o -iname '*.png' \) \
11 | shuf -n1)
12 [ -n "$img" ] || exit 0
13 /usr/bin/osascript -e "tell application \"System Events\" to tell every desktop to set picture to \"$img\""
14 '';
15 };
16 in
17 {
18 options.local.randomWallpaper = {
19 enable = lib.mkEnableOption "Random Rotating Wallpaper";
20 directory = lib.mkOption {
21 type = lib.types.str;
22 description = "Folder containing images";
23 };
24 interval = lib.mkOption {
25 type = lib.types.int;
26 default = 1800;
27 description = "Seconds between wallpaper changes";
28 };
29 };
30
31 config = lib.mkIf cfg.enable {
32 launchd.user.agents.random-wallpaper.serviceConfig = {
33 Label = "org.rschanz.wallpaperDaemon";
34 ProgramArguments = [ "${script}/bin/set-random-wallpaper" ];
35 StartInterval = cfg.interval;
36 RunAtLoad = true;
37 ProcessType = "Background";
38 };
39 };
40 }