{ stdenv, lib, fetchFromGitHub, cmake, pkgconfig, libpng, libjpeg , guiSupport ? false, libX11 # see http://dlib.net/compile.html , avxSupport ? true }: stdenv.mkDerivation rec { version = "19.16"; name = "dlib-${version}"; src = fetchFromGitHub { owner = "davisking"; repo = "dlib"; rev ="v${version}"; sha256 = "0ix52npsxfm6324jli7y0zkyijl5yirv2yzfncyd4sq0r9fcwb4p"; }; postPatch = '' rm -rf dlib/external ''; cmakeFlags = [ "-DUSE_AVX_INSTRUCTIONS=${if avxSupport then "yes" else "no"}" ]; 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; }; }