From 0b302ffa47ed8c80ed8bb652ce3b77991aec7977 Mon Sep 17 00:00:00 2001
From: Nick Cao <nickcao@nichi.co>
Date: Thu, 10 Feb 2022 10:46:46 +0800
Subject: [PATCH] v4l2loopback: prepend kernel.makeFlags to makeFlags and some
 cleanup

---
 pkgs/os-specific/linux/v4l2loopback/default.nix | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/pkgs/os-specific/linux/v4l2loopback/default.nix b/pkgs/os-specific/linux/v4l2loopback/default.nix
index c1aa7be2af6..095d873e66c 100644
--- a/pkgs/os-specific/linux/v4l2loopback/default.nix
+++ b/pkgs/os-specific/linux/v4l2loopback/default.nix
@@ -16,12 +16,9 @@ stdenv.mkDerivation rec {
   preBuild = ''
     substituteInPlace Makefile --replace "modules_install" "INSTALL_MOD_PATH=$out modules_install"
     sed -i '/depmod/d' Makefile
-    export PATH=${kmod}/sbin:$PATH
   '';
 
-  nativeBuildInputs = kernel.moduleBuildDependencies;
-
-  buildInputs = [ kmod ];
+  nativeBuildInputs = [ kmod ] ++ kernel.moduleBuildDependencies;
 
   postInstall = ''
     make install-utils PREFIX=$bin
@@ -29,7 +26,7 @@ stdenv.mkDerivation rec {
 
   outputs = [ "out" "bin" ];
 
-  makeFlags = [
+  makeFlags = kernel.makeFlags ++ [
     "KERNELRELEASE=${kernel.modDirVersion}"
     "KERNEL_DIR=${kernel.dev}/lib/modules/${kernel.modDirVersion}/build"
   ];