ingomueller-net opened a new issue, #47398:
URL: https://github.com/apache/arrow/issues/47398
### Describe the bug, including details regarding any error messages,
version, and platform.
The releases on PyPI seem to be compiled without the Substrait component. On
all versions including and above 19.0.0, I observe the following problem (in a
venv with `pyarrow` installed):
```
$ python -c "import pyarrow.substrait"
Traceback (most recent call last):
File "<string>", line 1, in <module>
import pyarrow.substrait
File
"/usr/local/google/home/ingomueller/.venv/substrait-mlir/lib/python3.13/site-packages/pyarrow/substrait.py",
line 30, in <module>
raise ImportError(
...<2 lines>...
) from None
ImportError: The pyarrow installation is not built with support for
'substrait' (No module named 'substrait.proto')
```
In the several versions before, the same command succeeds (and has no
output).
I have looked a bit into the build options and scripts but did not find any
suspicious change. Another possible reason for the breakage is that something
related to the protobuf files has changed but I haven't investigated that yet.
### Component(s)
Python
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