Hi Sebastian,
Thank you for your reply. I'm developing a plugin to allow SSH Tunneling for a
database connection (e.g. Postgres). Actually it works, but need some python
dependencies.
It is not the first time I'm facing a third-party modules issue. The challenge
is to:
- do not brake down native OSGeo4W python paths
- make plugin available to install for each qgis user, without root/admin
permissions (put dependencies inside user's catalogue - e.g. inside plugin
folder)
- make it uploadable to the Official QGIS Repository (shall not be to heavy, so
can't include external libs in most cases)
- make it work on every OS
Recently I ended up with hosting all compiled dependencies for each OS and
supporting Python version on my own server. Checking OS and Python during
plugin startup, downloading appropriate archives and unpacking them inside the
plugin folder, appending paths to sys.path. It has surprisingly worked, but it
was horrible to develop if you have a long "dependency chain".
Does anyone have a better solution?
Regards,
EnviroSolutions Sp. z o. o.
Michał Włoga
-Original Message-
From: Sebastian M. Ernst [mailto:er...@pleiszenburg.de]
Sent: Friday, May 29, 2020 12:54 PM
To: michal.wl...@envirosolutions.pl; qgis-developer@lists.osgeo.org
Subject: Re: [QGIS-Developer] Python Plugins external libs
Hi Michał,
I was waiting for any of the QGIS developers to comment on this ... A
collection of common, bad approaches can be found here [1]. Bottom line:
There is no clean way to do it. I recently wrote a summary of the situation and
those approaches, see here [2]. I also released an official QGIS enhancement
proposal which is currently being discussed.
It addresses this issue, among other stuff, see here [3]. I'd appreciate if you
could describe your desired use-case and put it as a comment into the
discussion. It would help to support the proposal.
Best regards,
Sebastian
[1]: https://gis.stackexchange.com/q/196002/13332
[2]:
https://github.com/qgist/pluginmanager-qep/blob/master/QEP.md#currently-missing-links
[3]: https://github.com/qgis/QGIS-Enhancement-Proposals/issues/179
Am 27.05.20 um 15:30 schrieb michal.wl...@envirosolutions.pl:
> Dear All,
>
>
>
> What is the best approach to include third-party python modules into
> the QGIS python plugin?
>
>
>
> Regards,
>
> EnviroSolutions Sp. z o. o.
> Michał Włoga
>
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