@classmethod
def from_json(cls, pkg='pkg.json', meta='meta.json', search_path=(
    '/usr/local/etc/pymod', '~/.config/pymod', '')):
    """Initialize from jsons under these search path"""
    pkg = cls.__load_json(pkg, search_path)
    if meta:
        meta = cls.__load_json(meta, search_path)
        cls.__preprocess_meta(pkg, meta)
    return cls(pkg)
