Kim van der Riet created PROTON-2550:
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Summary: [python-binding] setup.py install does not create module
directory when using --prefix
Key: PROTON-2550
URL: https://issues.apache.org/jira/browse/PROTON-2550
Project: Qpid Proton
Issue Type: Bug
Components: python-binding
Reporter: Kim van der Riet
Assignee: Andrew Stitcher
After building proton, installing the python bindings using the generated
*{{setup.py}}* does not create all of the necessary directories when used with
the *{{--prefix}}* option. In particular, a directory using the module name
*{{proton}}* is missing.
The following install command from the cmake build directory:
{noformat}
$ export PYTHONPATH=/tmp/lib64/python3.10/site-packages
$ cd python/dist/
$ python setup.py install --prefix /tmp
$ ls -l /tmp/lib64/python3.10/site-packages/
total 3
-rw-rw-r--. 1 kvdr kvdr 57 May 26 11:58 easy-install.pth
drwxrwxr-x. 5 kvdr kvdr 160 May 26 11:58
python_qpid_proton-0.38.0.dev0-py3.10-linux-x86_64.egg
{noformat}
produces a single {{python_qpid_proton-0.38.0.dev0-py3.10-linux-x86_64.egg}}
directory (and a {{easy-install.pth}} file if the {{PYTHONPATH}} is set prior
to the install).
This is insufficient to use module proton, even with the PYTHONPATH set:
{noformat}
$ cd ~ # Exit from dist directory which contains python install artifacts
$ echo $PYTHONPATH
/tmp/lib64/python3.10/site-packages
$ python
>>> import proton
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'proton'
>>>
{noformat}
However, a workaround exists by adding a symbolic link *{{proton}}* pointing to
the .egg directory:
{noformat}
$ cd /tmp/lib64/python3.10/site-packages/
$ ln -s python_qpid_proton-0.38.0.dev0-py3.10-linux-x86_64.egg proton
$ cd ~ # Exit from dist directory which contains python install artifacts
$ python
>>> import proton
>>> proton.__path__
_NamespacePath(['/tmp/lib64/python3.10/site-packages/proton'])
{noformat}
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