From 6adbfa11c581e0da909e70ab96bd10e824f28694 Mon Sep 17 00:00:00 2001
From: tea <tea@teatwig.net>
Date: Mon, 22 Sep 2025 21:11:11 +0200
Subject: [PATCH] nixos/mosquitto: add `retain_expiry_interval` freeform key

---
 nixos/modules/services/networking/mosquitto.nix | 1 +
 1 file changed, 1 insertion(+)

diff --git a/nixos/modules/services/networking/mosquitto.nix b/nixos/modules/services/networking/mosquitto.nix
index c9e0a2738fa5..9ac643706d40 100644
--- a/nixos/modules/services/networking/mosquitto.nix
+++ b/nixos/modules/services/networking/mosquitto.nix
@@ -518,6 +518,7 @@ let
     pid_file = 1;
     queue_qos0_messages = 1;
     retain_available = 1;
+    retain_expiry_interval = 1;
     set_tcp_nodelay = 1;
     sys_interval = 1;
     upgrade_outgoing_qos = 1;