{
  inputs,
  den,
  lib,
  ...
}:
let
  meshDevices = lib.listToAttrs (
    lib.concatMap (
      host:
      lib.mapAttrsToList (
        userName: user:
        let
          name = "${userName}@${host.name}";
        in
        {
          inherit name;
          value = {
            inherit name;
            id = user.syncthingId;
          };
        }
      ) (lib.filterAttrs (_: u: u ? syncthingId) host.users)
    ) (lib.attrValues den.hosts.x86_64-linux)
  );
in
{
  lux.syncthing = {
    homeManager = {
      services.syncthing = {
        enable = true;

        overrideDevices = true;
        overrideFolders = true;

        settings = {
          folders = {
            sync = {
              path = "~/sync";
              label = "sync";
              devices = lib.attrNames meshDevices;
            };
          };
          devices = meshDevices;
        };
      };
    };
  };
}