kou commented on pull request #12320:
URL: https://github.com/apache/arrow/pull/12320#issuecomment-1052716975
I took a look at this on ci.ursalabs.org.
I don't know much about venv but it seems that it works only when we use
`${VENV_ROOT}/bin/python3` (this is a symbolic link for the base `python3`)
instead of the base `python3`:
```console
cpp-build$ ls -lah ../venv-source/bin
total 96
drwxr-xr-x 15 ursa staff 480B 2 26 15:15 .
drwxr-xr-x 6 ursa staff 192B 2 26 15:15 ..
-rw-r--r-- 1 ursa staff 8.6K 2 26 15:15 Activate.ps1
-rw-r--r-- 1 ursa staff 1.9K 2 26 15:15 activate
-rw-r--r-- 1 ursa staff 917B 2 26 15:15 activate.csh
-rw-r--r-- 1 ursa staff 2.0K 2 26 15:15 activate.fish
-rwxr-xr-x 1 ursa staff 308B 2 26 15:15 f2py
-rwxr-xr-x 1 ursa staff 308B 2 26 15:15 f2py3
-rwxr-xr-x 1 ursa staff 308B 2 26 15:15 f2py3.9
-rwxr-xr-x 1 ursa staff 313B 2 26 15:15 pip
-rwxr-xr-x 1 ursa staff 313B 2 26 15:15 pip3
-rwxr-xr-x 1 ursa staff 313B 2 26 15:15 pip3.9
lrwxr-xr-x 1 ursa staff 9B 2 26 15:15 python -> python3.9
lrwxr-xr-x 1 ursa staff 9B 2 26 15:15 python3 -> python3.9
lrwxr-xr-x 1 ursa staff 42B 2 26 15:15 python3.9 ->
/opt/homebrew/opt/[email protected]/bin/python3.9
cpp-build$ arch -arm64 bash -c 'source ../venv-source/bin/activate; python3
-c "import numpy"'
cpp-build$ arch -arm64 bash -c 'source ../venv-source/bin/activate;
/opt/homebrew/opt/[email protected]/bin/python3 -c "import numpy"'
Traceback (most recent call last):
File "<string>", line 1, in <module>
ModuleNotFoundError: No module named 'numpy'
cpp-build$ arch -arm64 bash -c '../venv-source/bin/python3 -c "import numpy"'
```
It seems that we need to set `PYTHONHOME`, `PYTHONLIB` or something for
`arrow-python-test` because `arrow-python-test` isn't executed by `python3`.
`arrow-python-test` doesn't use `python3`. `arrow-python-test` uses
`libpython3.9.dylib` directly.
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