[FEAT]: setting desktop wallpaper

Setting a desktop wallpaper / background image / screensaver would be useful to have as an option for reproducibility.

We can set a wallpaper using the command line or as a separate application, however this might require having the images already in a folder, or downloading them at runtime.

Is this something nix is intended to manage? If so, I'm happy to write a PR.

I have this for my machine:

{ pkgs }:

let
  wallpaper = pkgs.fetchurl {
    url = "https://misc-assets.raycast.com/wallpapers/loupe-mono-dark.heic";
    sha256 = "sha256-MwvRU7U4tO6F1duxBrHLOd7F5Gnzv/zyiZkm5EFqkY4=";
  };
in
pkgs.writeShellScriptBin "set-wallpaper-script" ''
  set -e
  /usr/bin/osascript -e "tell application \"Finder\" to set desktop picture to POSIX file \"${wallpaper}\""
''

home.activation = {
  "setWallpaper" = lib.hm.dag.entryAfter [ "revealHomeLibraryDirectory" ] ''
    echo "[+] Setting wallpaper"
    ${setWallpaperScript}/bin/set-wallpaper-script
  '';
  
  "activateUserSettings" = lib.hm.dag.entryAfter [ "setWallpaper" ] ''
  ...

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[FEAT]: setting desktop wallpaper #1762

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[FEAT]: setting desktop wallpaper #1762

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birkhofflee commented on Jun 16, 2026

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