From 7b3e33c49cb543d6a21cf846aae7103ef118d2d8 Mon Sep 17 00:00:00 2001
From: Ruben Maher <r@rkm.id.au>
Date: Mon, 13 Nov 2017 20:03:19 +1030
Subject: [PATCH] mail-server/networking.nix: make use of use lib.optional

---
 mail-server/networking.nix | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/mail-server/networking.nix b/mail-server/networking.nix
index 851a1f0..f9b3336 100644
--- a/mail-server/networking.nix
+++ b/mail-server/networking.nix
@@ -24,10 +24,10 @@ in
 
     networking.firewall = {
       allowedTCPPorts = [ 25 587 ]
-        ++ (if enableImap then [ 143 ] else [])
-        ++ (if enableImapSsl then [ 993 ] else [])
-        ++ (if enablePop3 then [ 110 ] else [])
-        ++ (if enablePop3Ssl then [ 995 ] else []);
+        ++ lib.optional enableImap 143
+        ++ lib.optional enableImapSsl 993
+        ++ lib.optional enablePop3 110
+        ++ lib.optional enablePop3Ssl 995;
     };
   };
 }