gunzip aiohttp response on the fly

Question

How can I async the following code, without first downloading the entire file:

import gzip
import urllib.request

def gunzip_url(url: str):
    with gzip.open(urllib.request.urlopen(url), 'rt') as f:
        return f.read()

The following works, but it is not on the fly (downloads entire gz file before decompressing):

import aiohttp
import asyncio
import gzip

async def gunzip_url(client: aiohttp.ClientSession, url: str):
    async with client.get(url) as resp:
        gz = await resp.read()
        return gzip.decompress(gz)

async def main():
    async with aiohttp.ClientSession() as client:
        coros = [gunzip_url(client, 'http://some.file/1.gz'),
                 gunzip_url(client, 'http://some.file/2.gz')]
        return await asyncio.gather(*coros)

data = asyncio.run(main())

The following works, but is also not on the fly:

from aioify import aioify
agzip = aioify(obj=gzip, name='agzip')

async def gunzip_url(client: aiohttp.ClientSession, url):
    async with client.get(url) as resp:
        return await agzip.decompress(await resp.read())