add reformatted backups as test

modules/homelab/default.nix

@@ -37,6 +37,10 @@ in
       type = lib.types.str;
       description = "base domain used for reverse proxy";
     };
+    backup_repo = lib.mkOption {
+      type = lib.types.path;
+      default = "/holocron/archives/homelab";
+    };
   };
 
   # the order determines the order in glance :3
@@ -73,5 +77,21 @@ in
         group = cfg.media_group;
       };
     };
+
+    services.borgbackup.jobs = lib.attrsets.mapAttrs (name: arg: {
+      repo = cfg.backup_repo;
+      paths = arg.paths;
+      compression = "auto,zstd";
+      startAt = "daily";
+      encryption.mode = "repokey";
+      encryption.passCommand = "cat ${config.sops.secrets."borg_passwd".path}";
+    }) config.system.backups.baks;
+
+    sops.secrets = {
+      "borg_passwd" = {
+        owner = "root";
+        group = "root";
+      };
+    };
   };
 }