I would like to use following JSON query with Haystack, but cannot find how to use JSON queries instead of QuerySet (as it seems there is no way to do this in QuerySet).

{

"query": {
    "filtered": {
        "filter": {
            "bool": {
                "must": [
                    {
                        "term": {
                            "django_ct": "repositories.repository"
                        }
                    },
                    {
                        "term": {
                            "status": 1
                        }
                    },
                    {
                        "term": {
                            "is_private": false
                        }
                    },
                    {
                        "term": {
                            "is_library": false
                        }
                    }
                ]
            }
        },
        "query": {
            "function_score": {
                "query": {
                    "bool": {
                        "should": [
                            {
                                "match": {
                                    "name": {
                                        "query": "hipache"
                                    }
                                }
                            },
                            {
                                "custom_boost_factor": {
                                    "boost_factor": 0.005,
                                    "query": {
                                        "multi_match": {
                                            "fields": [
                                                "name_auto^3",
                                                "name_auto.partial^2",
                                                "name_auto.partial_back",
                                                "name_auto.partial_middle"
                                            ],
                                            "query": "hipache"
                                        }
                                    }
                                }
                            }
                        ]
                    }
                },
                "script_score": {
                    "script": "_score * (1 + 10.0*log(1 + doc['pull_count'].value))"
                }
            }
        }
    }
}

}