From 97c2e4bbd99f6034d550a83804e508c278045b67 Mon Sep 17 00:00:00 2001
From: tv <tv@krebsco.de>
Date: Sat, 21 May 2016 11:18:24 +0200
Subject: krebs.exim: validate config file syntax

---
 krebs/3modules/exim.nix  | 2 +-
 krebs/5pkgs/builders.nix | 8 ++++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

(limited to 'krebs')

diff --git a/krebs/3modules/exim.nix b/krebs/3modules/exim.nix
index 16a2a37b..7b18c72c 100644
--- a/krebs/3modules/exim.nix
+++ b/krebs/3modules/exim.nix
@@ -37,7 +37,7 @@ in {
   };
   config = lib.mkIf cfg.enable {
     environment = {
-      etc."exim.conf".text = ''
+      etc."exim.conf".source = pkgs.writeEximConfig "exim.conf" ''
         exim_user = ${cfg.user.name}
         exim_group = ${cfg.group.name}
         exim_path = /var/setuid-wrappers/exim
diff --git a/krebs/5pkgs/builders.nix b/krebs/5pkgs/builders.nix
index 146e6f9e..70d65cfc 100644
--- a/krebs/5pkgs/builders.nix
+++ b/krebs/5pkgs/builders.nix
@@ -56,6 +56,14 @@ rec {
     '';
   };
 
+  writeEximConfig = name: text: pkgs.runCommand name {
+    inherit text;
+    passAsFile = [ "text" ];
+  } ''
+    ${pkgs.exim}/bin/exim -C "$textPath" -bV >/dev/null
+    mv "$textPath" $out
+  '';
+
   writeNixFromCabal = name: path: pkgs.runCommand name {} ''
     ${pkgs.cabal2nix}/bin/cabal2nix ${path} > $out
   '';
-- 
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