kommode/gitea: skip some parts in the dumps

hosts/kommode/services/gitea/default.nix

@@ -194,8 +194,24 @@ in {
 
   networking.firewall.allowedTCPPorts = [ sshPort ];
 
+  systemd.services.gitea-dump = {
+    serviceConfig.ExecStart = let
+      args = lib.cli.toGNUCommandLineShell { } {
+        type = cfg.dump.type;
+
+        # This should be declarative on nixos, no need to backup.
+        skip-custom-dir = true;
+
+        # This can be regenerated, no need to backup
+        skip-index = true;
+
+        # Logs are stored in the systemd journal
+        skip-log = true;
+      };
+    in lib.mkForce "${lib.getExe cfg.package} ${args}";
+
     # Only keep n backup files at a time
-  systemd.services.gitea-dump.postStop = let
+    postStop = let
       cu = prog: "'${lib.getExe' pkgs.coreutils prog}'";
       backupCount = 3;
     in ''
@@ -203,4 +219,5 @@ in {
         ${cu "rm"} "$file"
       done
       '';
+  };
 }