diff --git a/example/flake.nix b/example/flake.nix
index e3073b3b..54068294 100644
--- a/example/flake.nix
+++ b/example/flake.nix
@@ -26,8 +26,43 @@
             imports = [
               inputs.services-flake.processComposeModules.default
             ];
-            services.mysql.m1.enable = true;
 
+            services.postgres."pg1" = {
+              enable = true;
+              listen_addresses = "127.0.0.1";
+              initialDatabases = [
+                {
+                  name = dbName;
+                  schema = "${inputs.northwind}/northwind.sql";
+                }
+              ];
+            };
+
+            services.postgres."pg2" = {
+              enable = true;
+              listen_addresses = "127.0.0.1";
+              port = 5433;
+            };
+
+            settings.processes.pgweb =
+              let
+                pgcfg = config.services.postgres.pg1;
+              in
+              {
+                environment.PGWEB_DATABASE_URL = "postgres://$USER@${pgcfg.listen_addresses}:${builtins.toString pgcfg.port}/${dbName}";
+                command = pkgs.pgweb;
+                depends_on."pg1".condition = "process_healthy";
+              };
+            settings.processes.test = {
+              command = pkgs.writeShellApplication {
+                name = "pg1-test";
+                runtimeInputs = [ config.services.postgres.pg1.package ];
+                text = ''
+                  echo 'SELECT version();' | psql -h 127.0.0.1 ${dbName}
+                '';
+              };
+              depends_on."pg1".condition = "process_healthy";
+            };
           };
 
         devShells.default = pkgs.mkShell {