Managed Python distribution missing os.getrandom

[wbilal-c]

Summary

My actual system Python is 3.13.2. The Python environment I'm trying to install in my virtual environment is Python 3.12 with uv.

I've followed these steps:

uv python install "python3.12"
uv venv "virtualenv_dir" --python "3.12" --link-mode copy   
source virtualenv_dir/bin/activate 

This is my pyvenv.vfg file:

❯ cat pyvenv.cfg
home = /home/name/.local/share/uv/python/cpython-3.12.9-linux-x86_64-gnu/bin
implementation = CPython
uv = 0.6.2
version_info = 3.12.9
include-system-site-packages = false

Then when trying to see if os.getrandom is working in my activated virtual env:

❯ python
Python 3.12.9 (main, Feb  5 2025, 19:10:45) [Clang 19.1.6 ] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import os
>>> os.getrandom(256,1)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: module 'os' has no attribute 'getrandom'. Did you mean: 'urandom'?
>>> 

Checking HAVE_GETRANDOM as well:

❯ python
Python 3.12.9 (main, Feb  5 2025, 19:10:45) [Clang 19.1.6 ] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import sysconfig
>>> sysconfig.get_config_vars("HAVE_GETRANDOM")
[0]

Is there a way to enable this option with uv?

Possible similar/related issue: #8429

Platform

6.12.10-arch1-1

Version

uv 0.6.2

Python version

Python 3.13.2

[zanieb]

Looks like a duplicate of astral-sh/python-build-standalone#193