From 7e76b127cd36d0310fdf98afd66e1999b4fc0d35 Mon Sep 17 00:00:00 2001
From: Florian Baumann <flo@noqqe.de>
Date: Thu, 8 Feb 2018 22:46:06 +0100
Subject: [PATCH] Multiple users with hashedPassword is broken in mosquitto

If you have more than 1 User with hasedPassword Option set it generates

```
rm -f /var/lib/mosquitto/passwd
touch /var/lib/mosquitto/passwd
echo 'user1:$6$xxx' > /var/lib/mosquitto/passwd
echo 'user2:$6$xxx' > /var/lib/mosquitto/passwd
```

Which ends up in only having 1 user.
---
 nixos/modules/services/networking/mosquitto.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nixos/modules/services/networking/mosquitto.nix b/nixos/modules/services/networking/mosquitto.nix
index 273ca797b98d..d8135f4d0ffa 100644
--- a/nixos/modules/services/networking/mosquitto.nix
+++ b/nixos/modules/services/networking/mosquitto.nix
@@ -212,7 +212,7 @@ in
       '' + concatStringsSep "\n" (
         mapAttrsToList (n: c:
           if c.hashedPassword != null then
-            "echo '${n}:${c.hashedPassword}' > ${cfg.dataDir}/passwd"
+            "echo '${n}:${c.hashedPassword}' >> ${cfg.dataDir}/passwd"
           else optionalString (c.password != null)
             "${pkgs.mosquitto}/bin/mosquitto_passwd -b ${cfg.dataDir}/passwd ${n} ${c.password}"
         ) cfg.users);