How to install httpx[http2] in WSL2

Question

I'm making a python program to test a web-server I am making. I use httpx and wanted to use http2 as well, to be able to send http version 2 requests. The only way I find to install it is pip install httpx[http2], but pip is not working on WSL (error: externally-managed-environment). I got around this with https by doing python3-pip install httpx but python3-pip install httpx[http2] does not seem to work or any other variants I have tried.

To clarify both my web server and python program is running in WSL.

The error that made me look into http2 was:

Error: Using http2=True, but the 'h2' package is not installed. Make sure to install httpx using `pip install httpx[http2]`.

• Charles Duffy: python3-pip or pip both run the risk of installing for a different environment than you're actually using. python -m pip by contrast always runs pip for the same environment that provides your python.

Answer 1

httpx[http2] just adds the h2 package try adding it manually by :

python3 -m pip install --user httpx h2

and i recommend to use virtual environment as it avoids any system level limitations:

python3 -m venv venv

source venv/bin/activate

pip install httpx[http2]

it should work now