{ lib, stdenv, fetchurl }:

stdenv.mkDerivation rec {
  pname = "ucl";
  version = "1.03";

  src = fetchurl {
    url = "https://www.oberhumer.com/opensource/ucl/download/ucl-${version}.tar.gz";
    sha256 = "b865299ffd45d73412293369c9754b07637680e5c826915f097577cd27350348";
  };

  # needed to successfully compile with gcc 6+ and modern clang versions where
  # `-Wimplicit-function-declaration` is otherwise on and errors by default
  env.CFLAGS = "-std=c89";

  meta = {
    homepage = "http://www.oberhumer.com/opensource/ucl/";
    description = "Portable lossless data compression library";
    license = lib.licenses.gpl2;
    platforms = lib.platforms.unix;
  };
}