@_if_not_installed("vtools")
def install_varianttools(env):
    version = "1.0.6"
    url = "http://downloads.sourceforge.net/project/varianttools/" \
          "{ver}/variant_tools-{ver}-src.tar.gz".format(ver=version)
    _get_install(url, env, _python_make)
namedChildren(parent, nodeName) -> children (not descendants) of parent
dataset/ETHPy150Open chapmanb/cloudbiolinux/cloudbio/custom/bio_nextgen.py/install_varianttools--crossover with--dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/web/domhelpers.py/namedChildren