From 4d461177a7d0e4e74bab1afd2e798d18d88860a5 Mon Sep 17 00:00:00 2001
From: Rouven Czerwinski <rouven@czerwinskis.de>
Date: Wed, 30 Dec 2020 19:09:43 +0100
Subject: [PATCH] chiaki: add DualShock4 touchpad support

Chiaki supports the touchpad on DualShock4 controllers when they are
connected via USB and requires libevdev & udev for this. Add both
libraries if chiaki is to be built for a Linux host.
---
 pkgs/games/chiaki/default.nix | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/pkgs/games/chiaki/default.nix b/pkgs/games/chiaki/default.nix
index d703833d452e..22e1c31eff1f 100644
--- a/pkgs/games/chiaki/default.nix
+++ b/pkgs/games/chiaki/default.nix
@@ -1,7 +1,8 @@
 { lib, mkDerivation, fetchgit
-, cmake, ffmpeg, libopus, qtbase, qtmultimedia, qtsvg, pkg-config, protobuf
-, python3Packages, SDL2 }:
+, cmake, ffmpeg, libevdev, libopus, udev, qtbase, qtmultimedia
+, qtsvg , pkg-config, protobuf , python3Packages, SDL2, stdenv }:
 
+with stdenv.lib;
 mkDerivation rec {
   pname = "chiaki";
   version = "2.0.1";
@@ -16,7 +17,8 @@ mkDerivation rec {
   nativeBuildInputs = [
     cmake pkg-config protobuf python3Packages.python python3Packages.protobuf
   ];
-  buildInputs = [ ffmpeg libopus qtbase qtmultimedia qtsvg protobuf SDL2 ];
+  buildInputs = [ ffmpeg libopus qtbase qtmultimedia qtsvg protobuf SDL2 ]
+    ++ optionals stdenv.hostPlatform.isLinux [ libevdev udev];
 
   doCheck = true;
   installCheckPhase = "$out/bin/chiaki --help";