{stdenv, fetchzip, zlib, gcc9, gnu-classpath_93}: stdenv.mkDerivation rec {
    pname = "jamvm";
    version = "1.5.1";

    src = fetchzip {
        url = "https://master.dl.sourceforge.net/project/${pname}/${pname}/JamVM%20${version}/${pname}-${version}.tar.gz";
        hash = "sha256-tBdFKV5IyQ0XRajdbLasm3wJMy9YUsu5NBoNlVInZSc=";
    };

    nativeBuildInputs = [gcc9];
    buildInputs = [zlib];

    configureFlags = ["--with-classpath-install-dir=${gnu-classpath_93}"];
}