{
  pkgs,
  lib,
  config,
  hostName,
  ...
}:
with builtins;
{
  systemd.services.sanoid.serviceConfig.SupplementaryGroups = [
    config.users.groups."disk".name
  ];
  services.sanoid = {
    enable = true;
    extraArgs = [ "--verbose" ];
    datasets = {
      "${hostName}/root" = {
        autosnap = true;
        autoprune = true;
        frequently = 0;
        hourly = 12;
        daily = 7;
        monthly = 0;
        yearly = 0;
        recursive = true;
      };
      "${hostName}/root/nix" = {
        autosnap = false;
      };
      "${hostName}/root/var/cache" = {
        autosnap = false;
      };
      "${hostName}/root/var/log" = {
        autosnap = false;
      };
      "${hostName}/root/home/julm/.cache" = {
        autosnap = false;
      };
      "${hostName}/root/home/julm/.local" = {
        hourly = 0;
        daily = 1;
      };
      "${hostName}/root/home/julm/.mozilla" = {
        hourly = 0;
        daily = 1;
      };
      "${hostName}/virt" = {
        autosnap = true;
        autoprune = true;
        hourly = 1;
        daily = 1;
        monthly = 0;
        yearly = 0;
        recursive = true;
      };
      "off2/julm/backup/${hostName}" = {
        autosnap = false;
        autoprune = true;
        hourly = 12;
        daily = 14;
        monthly = 3;
        yearly = 0;
      };
    };
  };
}