Build failure: python312Packages.etebase (for etesync-dav)

[wanderer]

Steps To Reproduce

Steps to reproduce the behavior:

1. nix shell nixpkgs#etesync-dav or build

Build log

Check whether the following modules can be imported: etebase
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "<string>", line 1, in <lambda>
  File "/nix/store/z7xxy35k7620hs6fn6la5fg2lgklv72l-python3-3.12.4/lib/python3.12/importlib/__init__.py", line 90, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<frozen importlib._bootstrap>", line 1387, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1360, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1331, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 935, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 995, in exec_module
  File "<frozen importlib._bootstrap>", line 488, in _call_with_frames_removed
  File "/nix/store/v3cgxmb6n78vyc8rq7gd7irgl423xlhd-python3.12-etebase-0.31.6/lib/python3.12/site-packages/etebase/__init__.py", line 6, in <module>
    from .etebase_python import CollectionAccessLevel, PrefetchOption, Utils  # noqa
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
ImportError: /nix/store/v3cgxmb6n78vyc8rq7gd7irgl423xlhd-python3.12-etebase-0.31.6/lib/python3.12/site-packages/etebase/etebase_python.cpython-312-x86_64-linux-gnu.so: undefined symbol: _PyUnicode_Ready

Notify maintainers

@thyol
@Valodim

Metadata

 - host os: `Linux 6.6.39-gnu, NixOS, 24.11 (Vicuna), 24.11.20240716.ad0b5ee`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Nix) 2.18.5`
 - channels(null): `"nixos"`
 - nixpkgs: `/nix/store/70y8v9qfn34sdfsnwh3l9772lk4rpfiy-source`

---

[ghpzin]

Looked through etebase upstream and there is an issue about it:
etesync/etebase-py#50

It mentioned that support for python312 in rust-cpython (that is used in flapigen-rs) is unlikely.
But 3 week ago PR was merged that supposedly fixed python312 support (also has something related to _PyUnicode_Ready from this error):
dgrunwald/rust-cpython#295
Tag with fix:
https://github.com/dgrunwald/rust-cpython/tree/0.7.2

So there may be an upstream fix, if somebody who understands it all can pass it through flapigen-rs and etebase-py.