From ab94ea66fae3aba48151f0e2243b2317378cd128 Mon Sep 17 00:00:00 2001
From: Brian Olsen <brian@maven-group.org>
Date: Thu, 15 Oct 2020 14:37:04 +0200
Subject: [PATCH] nixos/kresd: Fix unsupported regex

Regex supported by `builtins.match` differ on Linux and Darwin
(see NixOS/Nix#1537) and the empty match group errors on Darwin.
But simply removing it does not change the logic in the module in any
way.
---
 nixos/modules/services/networking/kresd.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nixos/modules/services/networking/kresd.nix b/nixos/modules/services/networking/kresd.nix
index ccb34163d5f3..bdadc5970e62 100644
--- a/nixos/modules/services/networking/kresd.nix
+++ b/nixos/modules/services/networking/kresd.nix
@@ -10,7 +10,7 @@ let
   mkListen = kind: addr: let
     al_v4 = builtins.match "([0-9.]\+):([0-9]\+)" addr;
     al_v6 = builtins.match "\\[(.\+)]:([0-9]\+)" addr;
-    al_portOnly = builtins.match "()([0-9]\+)" addr;
+    al_portOnly = builtins.match "([0-9]\+)" addr;
     al = findFirst (a: a != null)
       (throw "services.kresd.*: incorrect address specification '${addr}'")
       [ al_v4 al_v6 al_portOnly ];