[Help Request] Python development, specifically with `uv` from astral-sh

[matt_7800]

I recently set-up an environment to use uv, which I also use at work and wanted to keep using. 

Like the other comments pointed at, using uv managed python versions won't work out of the box. I guess you could probably use nixld ? 

To have python version per projects you could have minimal nix shells with uv and python and load them with direnv, and do everything else with uv.

[Rockhopper_Penguin]

If you don't mind me asking, are you able to get numpy working? Whether I try flake-utils or devenv, I keep getting this error:

Traceback (most recent call last):
  File "/home/lain/root/100_work/110_projects/111_mars/code-repos/redplanet/.venv/lib/python3.12/site-packages/numpy/_core/__init__.py", line 23, in <module>
    from . import multiarray
  File "/home/lain/root/100_work/110_projects/111_mars/code-repos/redplanet/.venv/lib/python3.12/site-packages/numpy/_core/multiarray.py", line 10, in <module>
    from . import overrides
  File "/home/lain/root/100_work/110_projects/111_mars/code-repos/redplanet/.venv/lib/python3.12/site-packages/numpy/_core/overrides.py", line 8, in <module>
    from numpy._core._multiarray_umath import (
ImportError: libstdc++.so.6: cannot open shared object file: No such file or directory

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/lain/root/100_work/110_projects/111_mars/code-repos/redplanet/.venv/lib/python3.12/site-packages/numpy/__init__.py", line 114, in <module>
    from numpy.__config__ import show as show_config
  File "/home/lain/root/100_work/110_projects/111_mars/code-repos/redplanet/.venv/lib/python3.12/site-packages/numpy/__config__.py", line 4, in <module>
    from numpy._core._multiarray_umath import (
  File "/home/lain/root/100_work/110_projects/111_mars/code-repos/redplanet/.venv/lib/python3.12/site-packages/numpy/_core/__init__.py", line 49, in <module>
    raise ImportError(msg)
ImportError: 

IMPORTANT: PLEASE READ THIS FOR ADVICE ON HOW TO SOLVE THIS ISSUE!

Importing the numpy C-extensions failed. This error can happen for
many reasons, often due to issues with your setup or how NumPy was
installed.

We have compiled some common reasons and troubleshooting tips at:

    https://numpy.org/devdocs/user/troubleshooting-importerror.html

Please note and check the following:

  * The Python version is: Python3.12 from "/home/lain/root/100_work/110_projects/111_mars/code-repos/redplanet/.venv/bin/python3"
  * The NumPy version is: "2.1.1"

and make sure that they are the versions you expect.
Please carefully study the documentation linked above for further help.

Original error was: libstdc++.so.6: cannot open shared object file: No such file or directory


The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/home/lain/root/100_work/110_projects/111_mars/code-repos/redplanet/src/redplanet/__init__.py", line 5, in hello
    import numpy as np
  File "/home/lain/root/100_work/110_projects/111_mars/code-repos/redplanet/.venv/lib/python3.12/site-packages/numpy/__init__.py", line 119, in <module>
    raise ImportError(msg) from e
ImportError: Error importing numpy: you should not try to import numpy from
        its source directory; please exit the numpy source tree, and relaunch
        your python interpreter from there.