From 9181faac41fcf3221353a045bb903e8c1db0557e Mon Sep 17 00:00:00 2001
From: Robin Gloster <mail@glob.in>
Date: Tue, 14 Nov 2017 16:49:00 +0100
Subject: [PATCH] dovecot: fix config if mailboxes == []

---
 nixos/modules/services/mail/dovecot.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/nixos/modules/services/mail/dovecot.nix b/nixos/modules/services/mail/dovecot.nix
index 6057acc531a..18101a31225 100644
--- a/nixos/modules/services/mail/dovecot.nix
+++ b/nixos/modules/services/mail/dovecot.nix
@@ -62,14 +62,14 @@ let
       }
     '')
 
-    ''
+    (optionalString (cfg.mailboxes != []) ''
       protocol imap {
         namespace inbox {
           inbox=yes
           ${concatStringsSep "\n" (map mailboxConfig cfg.mailboxes)}
         }
       }
-    ''
+    '')
 
     (optionalString cfg.enableQuota ''
       mail_plugins = $mail_plugins quota