From dcae10ebdac761005c6ce3fc33ea6d958faa3bb0 Mon Sep 17 00:00:00 2001
From: Franz Pletz <fpletz@fnordicwalking.de>
Date: Wed, 2 Mar 2016 19:04:21 +0100
Subject: [PATCH] wpa_supplicant service: Depend on interfaces being present

---
 nixos/modules/services/networking/wpa_supplicant.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/nixos/modules/services/networking/wpa_supplicant.nix b/nixos/modules/services/networking/wpa_supplicant.nix
index a8f445a2c73c..53648aef1e04 100644
--- a/nixos/modules/services/networking/wpa_supplicant.nix
+++ b/nixos/modules/services/networking/wpa_supplicant.nix
@@ -125,10 +125,12 @@ in {
       # FIXME: start a separate wpa_supplicant instance per interface.
       systemd.services.wpa_supplicant = let
         ifaces = cfg.interfaces;
+        deviceUnit = interface: [ "sys-subsystem-net-devices-${interface}.device" ];
       in {
         description = "WPA Supplicant";
 
         after = [ "network-interfaces.target" ];
+        requires = lib.concatMap deviceUnit ifaces;
         wantedBy = [ "network.target" ];
 
         path = [ pkgs.wpa_supplicant ];