[Rpm-maint] Python bindings: ModuleNotFoundError on custom prefix

[Panu Matilainen]

On 09/11/2017 06:31 PM, Jun Aruga wrote:
> Hello,
> 
> Though it might be basic thing,
> when I built latest master branch's source with ./configure --prefix, 
> then I did import the Python bindings, I got ModuleNotFoundError.
> 
> Could you tell me how to import it?

Um, "import rpm"?

If that doesn't work then either it's not in your runtime environment 
paths, or there's something wrong with the build.

> Thanks.
> 
> 
> Below steps are what I did.
> 
> $ pwd
> /home/jaruga/git/rpm
> 
> $ ./autogen.sh --noconfigure
> 
> $ ./configure --prefix="$(pwd)/dest"
> 
> $ make
> 
> $ make install
> 
> $ ls dest/
> bin/  include/  lib/  share/  var/
> 
> $ cd python/
> 
> $ python3 -m venv ./venv

No idea what this does so hard to say.

> 
> (venv) $ python setup.py build
> 
> (venv) $ python setup.py install
> 
> (venv) $ pip list
> Package    Version
> ---------- -------
> pip        9.0.1
> rpm        4.14.90
> setuptools 28.8.0
> 
> (venv) $ python -c 'import rpm'
> Traceback (most recent call last):
>    File "<string>", line 1, in <module>
>    File "/home/jaruga/git/rpm/python/rpm/__init__.py", line 38, in <module>
>      from rpm._rpm import *
> ModuleNotFoundError: No module named 'rpm._rpm'
> 
> (venv) $ python -c 'import sys; print(sys.path)'
> ['', '/usr/local/python-3.6.1/lib/python36.zip', 
> '/usr/local/python-3.6.1/lib/python3.6', 
> '/usr/local/python-3.6.1/lib/python3.6/lib-dynload', 
> '/home/jaruga/git/rpm/python/venv/lib/python3.6/site-packages']
> 
> (venv) $ ls venv/lib/python3.6/site-packages/rpm/ | sort
> __pycache__/
> _rpm.cpython-36m-x86_64-linux-gnu.so 
> <http://rpm.cpython-36m-x86_64-linux-gnu.so>*
> _rpmb.cpython-36m-x86_64-linux-gnu.so 
> <http://rpmb.cpython-36m-x86_64-linux-gnu.so>*
> _rpms.cpython-36m-x86_64-linux-gnu.so 
> <http://rpms.cpython-36m-x86_64-linux-gnu.so>*
> __init__.py
> transaction.py

Maybe it can't find the libraries of the newer rpm? strace is your 
friend, see what it's actually trying to do.

There's also https://github.com/rpm-software-management/rpm/issues/130 
which might affect things but not sure that would manifest in this way.

	- Panu -