python31xPackages.polars is broken

[bcdarwin]

Describe the bug

The python31xPackages.polars are completely broken [update: on x86 NixOS/non-NixOS Linux, no idea about aarch64 or Darwin] seemingly due to some sort of shared library issue. Unfortunately the tests aren't enabled so they didn't catch this.

According to git bisect, this breakage occured in 799fff8 from PR #243324.

@happysalada

Steps To Reproduce

Already very suspicious:

$ nix-shell -I nixpkgs=~/nixpkgs -p 'python310.withPackages(ps: with ps; [ polars ])' --pure --command 'python3 -c "import polars as pl"'
/nix/store/pfk7rv72dx8cgdh8qn19x308pbaj3qv5-python3-3.10.12-env/lib/python3.10/site-packages/polars/utils/build_info.py:5: UserWarning: polars binary missing!
  from polars.utils.polars_version import get_polars_version

Total breakage:

$ nix-shell -I nixpkgs=~/nixpkgs -p 'python310.withPackages(ps: with ps; [ polars ])' --pure --command 'python3 -c "import polars as pl; pl.read_csv(\"/tmp/existent-or-nonexistent.csv\")"'
/nix/store/pfk7rv72dx8cgdh8qn19x308pbaj3qv5-python3-3.10.12-env/lib/python3.10/site-packages/polars/utils/build_info.py:5: UserWarning: polars binary missing!
  from polars.utils.polars_version import get_polars_version
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/nix/store/pfk7rv72dx8cgdh8qn19x308pbaj3qv5-python3-3.10.12-env/lib/python3.10/site-packages/polars/io/csv/functions.py", line 354, in read_csv
    df = pl.DataFrame._read_csv(
  File "/nix/store/pfk7rv72dx8cgdh8qn19x308pbaj3qv5-python3-3.10.12-env/lib/python3.10/site-packages/polars/dataframe/frame.py", line 766, in _read_csv
    self._df = PyDataFrame.read_csv(
NameError: name 'PyDataFrame' is not defined. Did you mean: 'DataFrame'?

(and the same with Python 3.11)

[happysalada]

Are you on darwin by any chance ?

Ive just checked the recent cargo.toml and it looks like on darwin the allocator used is mimalloc

I think with passing this as a dependency it should improve the situatuion
Also, the package is in need of an update.

Im a little stretched at the moment, how interested are you in contributing ? (No pressure, im just asking in case you are)
If you are, i would be happy to help you get a PR merged.

[bcdarwin]

NixOS/Linux only, don't use Darwin at all currently. (Sorry, I meant to post nix-info output.)

[bcdarwin]

Happy to investigate on the Linux side though.

[happysalada]

If you have time to update the package first, it might save you some headaches.
Thanks for taking the time to look into this!

[ghost]

unable to reproduce. looks like it was fixed with PR #264373