niveum/systems/zaatar/kiosk.nix

{ config, pkgs, lib, ... }:
{
  users.extraUsers.kiosk = {
    isNormalUser = true;
    password = "";
    extraGroups = [ "audio" ];
  };
  services.cage = {
    enable = true;
    user = config.users.extraUsers.kiosk.name;
    extraArguments = [ "-s" ]; # allow vt switching
    program =
    let startUrls = [ "https://open.spotify.com" "https://youtube.com" "http://bvg.kmein.r" ];
    in pkgs.writers.writeDash "kiosk-browser" ''
      while true; do
        ${pkgs.chromium}/bin/chromium \
          --no-first-run --no-message-box --noerrdialogs \
          --default-browser --no-default-browser-check \
          --start-maximized ${lib.escapeShellArgs startUrls}
        sleep 0.5
      done
    '';
  };
  systemd.services.cage-tty1.environment.XKB_DEFAULT_LAYOUT = "de";
  programs.chromium = {
    enable = true;
    extensions = [
      "cjpalhdlnbpafiamejdnhcphjbkeiagm" # uBlock Origin
    ];
  };
}