hades: enable postgres backups

hosts/hades/default.nix

@@ -73,6 +73,10 @@ in {
       privatePort = 8080;
     };
 
+    postgresql-backup = {
+      enable = true;
+    };
+
     restic-backup = {
       enable = true;
       repo = "b2:hades-backup-alarsyo";

services/gitea/default.nix

@@ -95,6 +95,8 @@ in {
       ];
     };
 
+    # NOTE: no need to use postgresql.ensureDatabases because the gitea module
+    # takes care of this automatically
     services.postgresqlBackup = {
       databases = ["gitea"];
     };