From 54e6cfc1efd8e563371fee815389e51554998eef Mon Sep 17 00:00:00 2001
From: Andreas Rammhold <andreas@rammhold.de>
Date: Mon, 19 Oct 2020 21:41:53 +0200
Subject: [PATCH] iptuils: Remove systemd from dependencies

In our case systemd is only used to figure out if the unit files should
be generated.
---
 pkgs/os-specific/linux/iputils/default.nix | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/pkgs/os-specific/linux/iputils/default.nix b/pkgs/os-specific/linux/iputils/default.nix
index e12c44888a0b..665ec372e93c 100644
--- a/pkgs/os-specific/linux/iputils/default.nix
+++ b/pkgs/os-specific/linux/iputils/default.nix
@@ -1,6 +1,6 @@
 { stdenv, fetchFromGitHub
 , meson, ninja, pkgconfig, gettext, libxslt, docbook_xsl_ns
-, libcap, systemd, libidn2
+, libcap, libidn2
 }:
 
 with stdenv.lib;
@@ -22,6 +22,12 @@ in stdenv.mkDerivation rec {
     sha256 = "1jhbcz75a4ij1myyyi110ma1d8d5hpm3scz9pyw7js6qym50xvh4";
   };
 
+  postPatch = ''
+    # Enable the systemd units even without systemd being an input. We set the
+    # unitdir manually anyway.
+    sed -e 's/systemd\.found()/true/g' -i meson.build
+  '';
+
   mesonFlags = [
     "-DBUILD_RARPD=true"
     "-DBUILD_TRACEROUTE6=true"
@@ -33,7 +39,7 @@ in stdenv.mkDerivation rec {
     ++ optional stdenv.hostPlatform.isMusl "-DUSE_IDN=false";
 
   nativeBuildInputs = [ meson ninja pkgconfig gettext libxslt.bin docbook_xsl_ns ];
-  buildInputs = [ libcap systemd ]
+  buildInputs = [ libcap ]
     ++ optional (!stdenv.hostPlatform.isMusl) libidn2;
 
   meta = {