fixed forgejo dump

modules/features/forgejo.nix

@@ -78,10 +78,11 @@
               oauth2.JWT_SECRET = lib.mkForce config.sops.secrets."forgejo/jwt_secret".path;
               server.LFS_JWT_SECRET = lib.mkForce config.sops.secrets."forgejo/lfs_jwt_secret".path;
             };
-            # dump = {
-            #   enable = true;
-            #   interval = "12h";
-            # };
+            dump = {
+              enable = true;
+              type = "tar";
+              interval = "*-*-* 00/12:00:00";
+            };
           };
 
           postgresql = {
@@ -90,6 +91,14 @@
           };
         };
 
+        # https://forgejo.org/docs/latest/admin/command-line/#dump
+        systemd.services.forgejo-dump.serviceConfig.ExecStart = lib.mkForce ''
+          ${lib.getExe config.services.forgejo.package} dump --verbose \
+          --type ${config.services.forgejo.dump.type} \
+          --database postgres \
+          --work-path ${config.services.forgejo.dump.backupDir}
+        '';
+
         environment.systemPackages =
           let
             systemctl = lib.getExe' pkgs.systemd "systemctl";