raulcd commented on PR #47525:
URL: https://github.com/apache/arrow/pull/47525#issuecomment-3267009707
This is a draft PR, ignore the removal of a bunch of GitHub actions I am
just testing (will have to revert a commit) to re-add them.
I have been able to build Arrow C++ and PyArrow on GH actions but seem
unable to import the built PyArrow on CI, I've tried a lot of different
approaches to understand what is the DLL that fails loading, the error doesn't
give much detail:
```
Traceback (most recent call last):
File "<string>", line 2, in <module>
File "D:\a\arrow\arrow\build\python\pyarrow\__init__.py", line 61, in
<module>
import pyarrow.lib as _lib
ImportError: DLL load failed while importing lib: The specified module could
not be found.
```
I've added to the `PYTHONPATH` the path to Arrow C++ DLLs, PyArrow's path,
along with a bunch of debugging but can't seem to find what is failing, I've
been doing some dumpbin to find out what are the possible DLLs missing:
```
Dump of file D:\a\arrow\arrow\build\python\pyarrow\lib.cp312-win_amd64.pyd
File Type: DLL
Image has the following dependencies:
arrow_python.dll
arrow.dll
python312.dll
MSVCP140.dll
VCRUNTIME140.dll
VCRUNTIME140_1.dll
api-ms-win-crt-runtime-l1-1-0.dll
api-ms-win-crt-heap-l1-1-0.dll
api-ms-win-crt-string-l1-1-0.dll
KERNEL32.dll
```
I tried calling `vcvarsall.bat`, pip installing `msvc-runtime` but can't
seem to load the correct DLLs.
See the failing CI for more details:
https://github.com/raulcd/arrow/actions/runs/17555300447/job/49857798682
@pitrou any idea of what might be the problem? or something to debug what is
the missing DLL?
Otherwise I might try other approaches like building a wheel and using
delvewheel to fix it, or use conda instead.
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