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https://issues.apache.org/jira/browse/PROTON-2550?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17542639#comment-17542639
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Jiri Daněk commented on PROTON-2550:
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Maybe add {{--single-version-externally-managed}} to setup.py execution. It
helped in the router with a similar problem,
https://github.com/skupperproject/skupper-router/commit/d92f53e923ed7b9fd06070513309d31888a5610b
> [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
> Priority: Major
>
> 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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