From 424e6e501a44dc38c610f6d2039dda1cfafe9490 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B8rn=20Forsman?= <bjorn.forsman@gmail.com>
Date: Sun, 4 Oct 2015 14:31:16 +0200
Subject: [PATCH] nixos/modules: simplify pkgs.zfs handling

Thanks, @lethalman.
---
 nixos/modules/virtualisation/docker.nix | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/nixos/modules/virtualisation/docker.nix b/nixos/modules/virtualisation/docker.nix
index 0e1b9206999..7288cf29875 100644
--- a/nixos/modules/virtualisation/docker.nix
+++ b/nixos/modules/virtualisation/docker.nix
@@ -129,8 +129,7 @@ in
           LimitNPROC = 1048576;
         } // proxy_env;
 
-        path = [ pkgs.kmod ] ++
-          (if cfg.storageDriver == "zfs" then [ pkgs.zfs ] else []);
+        path = [ pkgs.kmod ] ++ (optional (cfg.storageDriver == "zfs") pkgs.zfs);
         environment.MODULE_DIR = "/run/current-system/kernel-modules/lib/modules";
 
         postStart = cfg.postStart;