depot/third_party/nixpkgs/pkgs/os-specific/linux/v4l2loopback/default.nix

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{ lib, stdenv, fetchFromGitHub, kernel, kmod }:
stdenv.mkDerivation {
pname = "v4l2loopback";
version = "0.12.7-unstable-2024-02-12-${kernel.version}";
src = fetchFromGitHub {
owner = "umlaeute";
repo = "v4l2loopback";
rev = "5d72c17f92ee0e38efbb7eb85e34443ecbf1a80c";
hash = "sha256-ggmYH5MUXhMPvA8UZ2EAG+eGoPTNbw7B8UxmmgP6CsE=";
};
hardeningDisable = [ "format" "pic" ];
preBuild = ''
substituteInPlace Makefile --replace "modules_install" "INSTALL_MOD_PATH=$out modules_install"
sed -i '/depmod/d' Makefile
'';
nativeBuildInputs = [ kmod ] ++ kernel.moduleBuildDependencies;
postInstall = ''
make install-utils PREFIX=$bin
'';
outputs = [ "out" "bin" ];
makeFlags = kernel.makeFlags ++ [
"KERNELRELEASE=${kernel.modDirVersion}"
"KERNEL_DIR=${kernel.dev}/lib/modules/${kernel.modDirVersion}/build"
];
meta = with lib; {
description = "A kernel module to create V4L2 loopback devices";
mainProgram = "v4l2loopback-ctl";
homepage = "https://github.com/umlaeute/v4l2loopback";
license = licenses.gpl2Only;
maintainers = with maintainers; [ moni ];
platforms = platforms.linux;
outputsToInstall = [ "out" ];
};
}