Dump postgres databases for backups

flake.nix

@@ -967,9 +967,13 @@
         c3d2 = {
           imports = [
             sops-nix.nixosModule
+            ./modules/audio-server.nix
+            ./modules/autoupdate.nix
+            ./modules/backup.nix
             ./modules/c3d2.nix
             ./modules/nncp.nix
-            ./modules/autoupdate.nix
+            ./modules/logging.nix
+            ./modules/stats.nix
           ];
           c3d2.hosts = hostRegistry.hosts;
           c3d2.users = import ./users.nix;

modules/backup.nix

@@ -0,0 +1,12 @@
+{ config, ... }:
+
+{
+  config.services.postgresqlBackup = {
+    enable = config.services.postgresql.enable;
+    backupAll = true;
+    compression = "zsdt";
+    compressionLevel = 9;
+    pgdumpOptions = "--create --clean";
+    startAt = "*-*-* 06:00:00";
+  };
+}

modules/c3d2.nix

@@ -37,12 +37,6 @@ let
   toHqPrivateAddress = toIpv6Address hqPrefix64;
 in
 {
-  imports = [
-    ./stats.nix
-    ./audio-server.nix
-    ./logging.nix
-  ];
-
   options.c3d2 = with lib; {
     acmeEmail = mkOption {
       type = types.str;