From d3a19f1b8e65668ca711c4f329ab0a296f3774c9 Mon Sep 17 00:00:00 2001
From: Nikolay Amiantov <ab@fmap.me>
Date: Sun, 10 Jan 2016 15:33:23 +0300
Subject: [PATCH] nixos/postfix: backwards compatibility with /var/postfix

---
 nixos/modules/services/mail/postfix.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/nixos/modules/services/mail/postfix.nix b/nixos/modules/services/mail/postfix.nix
index 00cabc505cab..ab6ad3906000 100644
--- a/nixos/modules/services/mail/postfix.nix
+++ b/nixos/modules/services/mail/postfix.nix
@@ -430,6 +430,11 @@ in
           };
 
           preStart = ''
+            # Backwards compatibility
+            if [ ! -d /var/lib/postfix ] && [ -d /var/postfix ]; then
+              mkdir -p /var/lib
+              mv /var/postfix /var/lib/postfix
+            fi
             mkdir -p /var/lib/postfix/data /var/lib/postfix/queue/{pid,public,maildrop}
 
             chown -R ${user}:${group} /var/lib/postfix