strange hanging behavior with `nest_asyncio` when used in combination with `concurrent.futures `ProcessPoolExecutor` about nest_asyncio HOT 3 CLOSED

import asyncio
from typing import List

import distex

import nest_asyncio
nest_asyncio.apply()


async def get_urls_httpx(urls):
    import httpx
    import asyncio
    
    async def _get_url_httpx(url, session):
        resp = await session.get(url, timeout=None)
        return resp.status_code

    session = httpx.AsyncClient()
    try:
        coros = [_get_url_httpx(url, session) for url in urls]
        result = await asyncio.gather(*coros)
    finally:
        await session.aclose()
    return result


async def get_urls_aiohttp(urls: List[str]):
    import asyncio
    import aiohttp
    
    async def _get_url_aiohttp(url, session):
        async with session.get(url) as resp:
            return resp.status
    
    async with aiohttp.ClientSession() as session:
        coros = [_get_url_aiohttp(url, session) for url in urls]
        result = await asyncio.gather(*coros)
    return result
        

def get_all_urls(all_urls: List[List[str]], func):
    with distex.Pool() as pool:
        results = list(pool.map(func, all_urls, ordered=False))
    return results

def get_all_urls(all_urls: List[List[str]], func):
    import multiprocessing as mp
    from concurrent.futures import ProcessPoolExecutor, as_completed

    ctx = mp.get_context('spawn')

    with ProcessPoolExecutor(mp_context=ctx) as executor:
        futures = [executor.submit(func, urls) for urls in all_urls]

        print("waiting on futures")
        results = []
        for future in as_completed(futures):
            print("future", future)
            result = future.result()
            results.append(result)

    return results