{ stdenv, lib, fetchFromGitHub, cmake, pkgconfig, libpng, libjpeg , guiSupport ? false, libX11 }: stdenv.mkDerivation rec { version = "19.13"; name = "dlib-${version}"; src = fetchFromGitHub { owner = "davisking"; repo = "dlib"; rev ="v${version}"; sha256 = "11ia4pd2lm2s9hzwrdvimj3r2qcnvjdp3g4fry2j1a6z9f99zvz3"; }; postPatch = '' rm -rf dlib/external ''; enableParallelBuilding = true; nativeBuildInputs = [ cmake pkgconfig ]; buildInputs = [ libpng libjpeg ] ++ lib.optional guiSupport libX11; meta = with stdenv.lib; { description = "A general purpose cross-platform C++ machine learning library"; homepage = http://www.dlib.net; license = licenses.boost; maintainers = with maintainers; [ christopherpoole ma27 ]; platforms = platforms.linux; }; }