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

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{ stdenv, fetchurl, kernel, kmod }:
stdenv.mkDerivation rec {
name = "v4l2loopback-${version}-${kernel.version}";
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version = "0.9.1";
src = fetchurl {
url = "https://github.com/umlaeute/v4l2loopback/archive/v${version}.tar.gz";
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sha256 = "1crkhxlnskqrfj3f7jmiiyi5m75zmj7n0s26xz07wcwdzdf2p568";
};
preBuild = ''
substituteInPlace Makefile --replace "modules_install" "INSTALL_MOD_PATH=$out modules_install"
sed -i '/depmod/d' Makefile
export PATH=${kmod}/sbin:$PATH
'';
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buildInputs = [ kmod ];
makeFlags = [
"KERNELRELEASE=${kernel.modDirVersion}"
"KERNEL_DIR=${kernel.dev}/lib/modules/${kernel.modDirVersion}/build"
];
meta = with stdenv.lib; {
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description = "A kernel module to create V4L2 loopback devices";
homepage = https://github.com/umlaeute/v4l2loopback;
license = licenses.gpl2;
maintainers = [ maintainers.iElectric ];
platforms = platforms.linux;
};
}