From d0327c052cb7c5c685bb392e658e25e918fca535 Mon Sep 17 00:00:00 2001
From: Tino Breddin <tino@daogames.com>
Date: Sun, 30 Nov 2014 10:37:18 +0100
Subject: [PATCH] Fix filename for udev network interface rules

From http://www.freedesktop.org/wiki/Software/systemd/PredictableNetworkInterfaceNames/

You disable the assignment of fixed names, so that the unpredictable
kernel names are used again. For this, simply mask udev's rule file for
the default policy: ln -s /dev/null
/etc/udev/rules.d/80-net-setup-link.rules (since v209: this file was
called 80-net-name-slot.rules in release v197 through v208)
---
 .../{80-net-name-slot.rules => 80-net-setup-link.rules}       | 0
 nixos/modules/services/hardware/udev.nix                      | 4 ++--
 2 files changed, 2 insertions(+), 2 deletions(-)
 rename nixos/modules/services/hardware/{80-net-name-slot.rules => 80-net-setup-link.rules} (100%)

diff --git a/nixos/modules/services/hardware/80-net-name-slot.rules b/nixos/modules/services/hardware/80-net-setup-link.rules
similarity index 100%
rename from nixos/modules/services/hardware/80-net-name-slot.rules
rename to nixos/modules/services/hardware/80-net-setup-link.rules
diff --git a/nixos/modules/services/hardware/udev.nix b/nixos/modules/services/hardware/udev.nix
index 2a6f4cfb4e37..c9e3b8a855a6 100644
--- a/nixos/modules/services/hardware/udev.nix
+++ b/nixos/modules/services/hardware/udev.nix
@@ -87,8 +87,8 @@ let
         grep -l '\(RUN+\|IMPORT{program}\)="\(/usr\)\?/s\?bin' $i/*/udev/rules.d/* || true
       done
 
-      ${optionalString config.networking.usePredictableInterfaceNames ''
-        cp ${./80-net-name-slot.rules} $out/80-net-name-slot.rules
+      ${optionalString (! config.networking.usePredictableInterfaceNames) ''
+        cp ${./80-net-setup-link.rules} $out/80-net-setup-link.rules
       ''}
 
       # If auto-configuration is disabled, then remove