How would you install python modules/packages so that my script can be run with pypy3 instead of Python3? ImportError: No module named - pip

Question

I have Python3.8 built from source on my Debian 10 Xfce desktop (binaries are not available in Debian repositories). That said, whenever I can, I run my python scripts with pypy3, which I do for the sake of performance.
Now, when I run the following code with pypy3 :
#!/usr/bin/env python3.8
import requests
from bs4 import BeautifulSoup
url = input("What is the address of the web page in question?")
response = requests.get(url)
soup = BeautifulSoup(response.text, 'html.parser')
print(soup.title.string)
I get from pypy3:
ImportError: No module named 'requests'
The same script is run by Python3.8 without any problems
I assume that I would have to install the module in a similar way that I did it for Python, that is: sudo pip3.8 install requests.
Based on my research of a similar problem described on Stackoveflow I tried:
pypy3 -m pip3.8 install requests
and got the following from my pypy3:
Error while finding module specification for 'pip3.8' (ImportError: No >module named 'pip3')
Then I also tried to run:
pypy3 -m pip install requests
And got the following:
No module named pip
My pip3.8 works fine for Python3.8, not for my pypy3, though.
How should I look for modules in pypy3. And how should I install them?
Is the problem with installing and importing modules one of the reasons reason for the low usage of pypy3?

Answer 1

Run this once to install pip itself: pypy3 -m ensurepip
The next version of PyPy will improve the error message to describe this command explicitly when you do pypy3 -m pip and pip is not installed yet.

Answer 2

pypy3
Enable snaps on Debian and install pypy3
Snaps are applications packaged with all their dependencies to run on all popular Linux distributions from a single build. They update automatically and roll back gracefully.
Snaps are discoverable and installable from the Snap Store, an app store with an audience of millions.
Enable snapd:
sudo apt update
sudo apt install snapd
Install pypy3:
sudo snap install pypy3 --classic
Normally, the pip and package are installed as follows
First of all, you need to install the pip
Install pip for Python 3
Follow the steps below to install Pip for Python 3 on Debian:
First, update the package list with:
sudo apt update
Next, install pip for Python 3 and all of its dependencies by typing:
sudo apt install python3-pip
Verify the installation by printing the pip version:
pip3 --version
The version number may be different, but it will look something like the one below:
pip 9.0.1 from /usr/lib/python3/dist-packages (python 3.5)
Pip Usage
With pip, we can install packages from PyPI, version control, local projects, and from distribution files but in most cases, you will install packages from PyPI.
we want to install a package named croniter, we can do that by issuing the following command:
pip install requests
To uninstall a package run:
pip uninstall requests