From a1c24ab976eec1ae5a5c4c72122e17ff0a5e3a15 Mon Sep 17 00:00:00 2001
From: Franz Pletz <fpletz@fnordicwalking.de>
Date: Thu, 1 Sep 2016 00:58:38 +0200
Subject: [PATCH] systemd: apply patch to fix #18158

See:
 - https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=834367
 - https://github.com/systemd/systemd/issues/3842
---
 pkgs/os-specific/linux/systemd/default.nix | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/pkgs/os-specific/linux/systemd/default.nix b/pkgs/os-specific/linux/systemd/default.nix
index eff515c3dad1..d02f7291df52 100644
--- a/pkgs/os-specific/linux/systemd/default.nix
+++ b/pkgs/os-specific/linux/systemd/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, pkgconfig, intltool, gperf, libcap, kmod
+{ stdenv, fetchFromGitHub, fetchpatch, pkgconfig, intltool, gperf, libcap, kmod
 , zlib, xz, pam, acl, cryptsetup, libuuid, m4, utillinux, libffi
 , glib, kbd, libxslt, coreutils, libgcrypt, libgpgerror, libapparmor, audit, lz4
 , kexectools, libmicrohttpd, linuxHeaders ? stdenv.cc.libc.linuxHeaders, libseccomp
@@ -20,6 +20,14 @@ stdenv.mkDerivation rec {
     sha256 = "021b7filp1dlhic1iv54b821w7mj5595njvzns939pmn636ry4m5";
   };
 
+  patches = [
+    # Fixes tty issues, see #18158. Remove when upgrading to systemd 232.
+    (fetchpatch {
+      url = "https://github.com/systemd/systemd/commit/bd64d82c1c0e3fe2a5f9b3dd9132d62834f50b2d.patch";
+      sha256 = "1gc9fxdlnfmjhbi77xfwcb5mkhryjsdi0rmbh2lq2qq737iyqqwm";
+    })
+  ];
+
   /* gave up for now!
   outputs = [ "out" "libudev" "doc" ]; # maybe: "dev"
   # note: there are many references to ${systemd}/...