idk but yes

modules/services/nextcloud.nix

@@ -21,6 +21,7 @@
         hostName = "localhost";
         config.adminpassFile = "/etc/nextcloud-admin-pass";
         config.dbtype = "sqlite";
+        database.createLocally = true;
         settings.trusted_domains = [
           "wallfacer.curl-boga.ts.net"
         ];