From 0a20166ca199e5297a9f72fdd99f71d0c9e0a362 Mon Sep 17 00:00:00 2001
From: Aaron Andersen <aaron@fosslib.net>
Date: Wed, 16 Dec 2020 16:52:51 -0500
Subject: [PATCH] nixos/zabbixWeb: include DOUBLE_IEEE754 directive

---
 nixos/modules/services/web-apps/zabbix.nix | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/nixos/modules/services/web-apps/zabbix.nix b/nixos/modules/services/web-apps/zabbix.nix
index 00719512834..e94861a90b5 100644
--- a/nixos/modules/services/web-apps/zabbix.nix
+++ b/nixos/modules/services/web-apps/zabbix.nix
@@ -3,7 +3,7 @@
 let
 
   inherit (lib) mkDefault mkEnableOption mkForce mkIf mkMerge mkOption types;
-  inherit (lib) literalExample mapAttrs optionalString;
+  inherit (lib) literalExample mapAttrs optionalString versionAtLeast;
 
   cfg = config.services.zabbixWeb;
   fpm = config.services.phpfpm.pools.zabbix;
@@ -28,6 +28,8 @@ let
     $ZBX_SERVER_PORT = '${toString cfg.server.port}';
     $ZBX_SERVER_NAME = ''';
     $IMAGE_FORMAT_DEFAULT = IMAGE_FORMAT_PNG;
+
+    ${cfg.extraConfig}
   '';
 
 in
@@ -143,6 +145,14 @@ in
         '';
       };
 
+      extraConfig = mkOption {
+        type = types.lines;
+        default = "";
+        description = ''
+          Additional configuration to be copied verbatim into <filename>zabbix.conf.php</filename>.
+        '';
+      };
+
     };
   };
 
@@ -150,6 +160,10 @@ in
 
   config = mkIf cfg.enable {
 
+    services.zabbixWeb.extraConfig = optionalString ((versionAtLeast config.system.stateVersion "20.09") && (versionAtLeast cfg.package.version "5.0.0")) ''
+      $DB['DOUBLE_IEEE754'] = 'true';
+    '';
+
     systemd.tmpfiles.rules = [
       "d '${stateDir}' 0750 ${user} ${group} - -"
       "d '${stateDir}/session' 0750 ${user} ${config.services.httpd.group} - -"