Enable service and timer

backup.nix

@@ -47,7 +47,6 @@ in
   config = lib.mkIf cfg.enable {
     systemd.services."backup-helper@" = {
       after = "network-online.target";
-      enable = false;
       environment = {
         RESTIC_REPOSITORY = cfg.restic-repository;
       } // lib.attrsets.optionalAttrs (builtins.hasAttr "password-file" cfg) {
@@ -59,7 +58,6 @@ in
       };
     };
     systemd.timers."backup-helper@" = {
-      enable = false;
       timerConfig = {
         OnCalendar = cfg.schedule;
         Persistent = true;