def install_ambient_run_script(ctx):
    import os, shutil

    srcdir = globals()["srcdir"]
    script = os.path.join(srcdir, "ambient-run-script")

    shutil.copy(script, ".")


def create_tar(ctx, filename=None, directory=None):
    import tarfile

    tar = tarfile.open(name=filename, mode="w:")
    tar.add(directory, arcname=".")
    tar.close()


def create_empty_tar(ctx, filename=None):
    import tarfile

    tarfile.open(name=filename, mode="w:").close()