raulcd opened a new issue, #49138: URL: https://github.com/apache/arrow/issues/49138
### Describe the bug, including details regarding any error messages, version, and platform. We use a nightlies version of Cython for free-threaded PyArrow: > https://pypi.anaconda.org/scientific-python-nightly-wheels/simple/cython/3.3.0a0/cython-3.3.0a0-py3-none-any.whl This is currently failing with: ``` [13/115] Compiling Cython CXX source for lib... FAILED: CMakeFiles/lib_pyx /arrow/python/build/temp.linux-x86_64-cpython-313t/CMakeFiles/lib_pyx cd /arrow/python/build/temp.linux-x86_64-cpython-313t && /opt/python/cp313-cp313t/bin/python -m cython --cplus --warning-errors --no-c-in-traceback -Xfreethreading_compatible=True --directive embedsignature=True --working /arrow/python --output-file /arrow/python/build/temp.linux-x86_64-cpython-313t/lib.cpp /arrow/python/pyarrow/lib.pyx Error compiling Cython file: ------------------------------------------------------------ ... options.field_merge_options = _parse_field_merge_options( "default" if promote_options == "none" else promote_options ) with nogil: options.unify_schemas = promote_options != "none" ^ ------------------------------------------------------------ pyarrow/table.pxi:6320:48: Coercion from Python not allowed without the GIL Error compiling Cython file: ------------------------------------------------------------ ... options.field_merge_options = _parse_field_merge_options( "default" if promote_options == "none" else promote_options ) with nogil: options.unify_schemas = promote_options != "none" ^ ------------------------------------------------------------ pyarrow/table.pxi:6320:48: Operation not allowed without gil ``` Taking a look at latest Cython commits the following could be related: https://github.com/cython/cython/commit/46e961eeed1c4c3206dce21377edccfbb57577eb I am unsure what the problem is and whether is a regression on Cython or we should fix the comparison to require the GIL. This is happening both on main and the 23.0.1 maintenance branch so it has to be fixed for the release. ### Component(s) Packaging, Python -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
