From 7eb824334de36d6fe7a15c95a958e00a50eac319 Mon Sep 17 00:00:00 2001
From: Louis Bettens <louis@bettens.info>
Date: Sun, 22 Jan 2023 15:09:54 +0100
Subject: [PATCH] dhcpcd: avoid crash

Fixes #199200
---
 pkgs/tools/networking/dhcpcd/default.nix | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/pkgs/tools/networking/dhcpcd/default.nix b/pkgs/tools/networking/dhcpcd/default.nix
index 81c721a20a49..87162c4e0d4d 100644
--- a/pkgs/tools/networking/dhcpcd/default.nix
+++ b/pkgs/tools/networking/dhcpcd/default.nix
@@ -1,6 +1,7 @@
 { lib
 , stdenv
 , fetchurl
+, fetchpatch
 , pkg-config
 , udev
 , runtimeShellPackage
@@ -18,6 +19,15 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-gZNXY07+0epc9E7AGyTT0/iFL+yLQkmSXcxWZ8VON2w=";
   };
 
+  patches = [
+    # dhcpcd with privsep SIGSYS's on dhcpcd -U
+    # https://github.com/NetworkConfiguration/dhcpcd/issues/147
+    (fetchpatch {
+      url = "https://github.com/NetworkConfiguration/dhcpcd/commit/38befd4e867583002b96ec39df733585d74c4ff5.patch";
+      hash = "sha256-nS2zmLuQBYhLfoPp0DOwxF803Hh32EE4OUKGBTTukE0=";
+    })
+  ];
+
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [
     udev