{stdenv, fetchFromGitHub, ant_1_6, gnu-classpath_93, jamvm_1_5_1, ecj}: stdenv.mkDerivation rec {
    pname = "xalan";
    version = "2.7.1";

    src = fetchFromGitHub {
        owner = "apache";
        repo = "xalan-java";
        rev = "xalan-j_2_7_1";
        hash = "sha256-lanJNBOawKdBarXmDFzW5R1DuEtl/EC+4cxMxvvCJdk=";
    };

    nativeBuildInputs = [ant_1_6 jamvm_1_5_1];

    env = {
        JAVA_HOME="${gnu-classpath_93}";
        CLASSPATH="${ecj}/bin/ecj.jar";
        ANT_OPTS="-Dbuild.compiler=org.eclipse.jdt.core.JDTCompilerAdapter";
    };

    buildPhase = ''
        ant
    '';

    installPhase = ''
        mkdir -p $out/bin
        cp -r ./build/xalan.jar $out/bin/xalan.jar
        cp -r ./build/serializer.jar $out/bin/serializer.jar
    '';
}