nixos-config/hosts/falkenstein-1/modules/backup/default.nix

{ config, pkgs, ... }:
{
  sops.secrets."borg/passphrase" = { };
  environment.systemPackages = [ pkgs.borgbackup ];
  services.borgmatic = {
    enable = true;
    settings = {
      source_directories = [
        "/var/lib"
        "/var/log"
        "/root"
      ];

      repositories = [
        {
          path = "ssh://root@192.168.10.2/mnt/backup/falkenstein";
          label = "nuc";
        }
      ];
      storage = {
        encryption_passcommand = "${pkgs.coreutils}/bin/cat ${config.sops.secrets."borg/passphrase".path}";
        compression = "lz4";
      };
      retention = {
        keep_daily = 7;
        keep_weekly = 4;
        keep_monthly = 12;
        keep_yearly = 3;
      };
    };
  };
}