Hi Julien, Thank you for your detailed answer:
"If you're interested, let me know. It could motivate me to write a tutorial detailing this method." Yes, I would be very interested in that tutorial if you managed to find the time. Regards, John Prof. John Lindsay Dept. of Geography, Environment & Geomatics, The University of Guelph, Room 122, Hutt Building, E-mail: jlind...@uoguelph.ca Phone: (519) 824-4120 ext. 56074 Web: https://geg.uoguelph.ca/faculty/lindsay-john Research page: https://jblindsay.github.io/ghrg/index.html WhiteboxTools GIS project: https://www.whiteboxgeo.com/ Twitter: https://twitter.com/whiteboxgeo ________________________________ From: QGIS-Developer <qgis-developer-boun...@lists.osgeo.org> on behalf of Julien Moura via QGIS-Developer <qgis-developer@lists.osgeo.org> Sent: Friday, January 19, 2024 3:49 PM To: qgis-developer@lists.osgeo.org <qgis-developer@lists.osgeo.org> Subject: Re: [QGIS-Developer] QGIS plugin depends on pypi package CAUTION: This email originated from outside of the University of Guelph. Do not click links or open attachments unless you recognize the sender and know the content is safe. If in doubt, forward suspicious emails to ith...@uoguelph.ca. Hello John, It's a recurring issue/question since QGIS does not support pip dependencies and that PyQGIS plugins are not following the official Python packaging standards from PEPs and related formats (typically metadata.txt instead of setup.cfg, pyproject.toml). You will find some unsuccessful QEPs about this. For example: https://github.com/qgis/QGIS-Enhancement-Proposals/issues/202. Shortly, here come 3 workarounds: * basic: run pip install in a rough subcommand. Not so elegant but still efficient. * re-wheeling: implement a minimalist (or complete) 3rd party packages managers, miming pip through QgsNetwork tooling. Best example I know until today: ENMap-Box plugin (see attached screenshot or try it yourself). * YAML addicts: run your pip install during your plugin's packaging job in CI and include external dependencies in a subfolder before deploying it to your favorite plugins repository. Then, manage install loading from your plugin with try/except ImportError and 'site' module. This is the way I prefer and use for years now. Main downside: for dependencies requiring a specific compilation on an operating system, you need to include various outputs. See Roof Classify<https://github.com/DINFO-UniFI/RoofClassify> (GitHub Workflow), Thyrsis<https://gitlab.com/Oslandia/qgis/thyrsis> (GitLab CI), QSoccer<https://gitlab.com/Oslandia/qgis/QSoccer/> (GitLab CI), QDuckDB<https://gitlab.com/Oslandia/qgis/qduckdb> (GitLab CI)... If you're interested, let me know. It could motivate me to write a tutorial detailing this method. * bravehearts: working on packaging your dependencies into osgeo4w; but they probably won't be included in default QGIS packages (.msi) Just a quick advice: if you do some pip install within your plugin, during the packaging or during the run, make it under a custom folder related only to your plugin and use site to load extra dependencies in the QGIS Python environment to avoid issues. Good luck! Regards Julien Le 19/01/2024 à 19:16, John Lindsay via QGIS-Developer a écrit : Agreed, when I 'print(sys.executable)' from within the QGIS Python Console (on my MacBook Pro), I see: /Applications/QGIS.app/Contents/MacOS/QGIS But from my system terminal, I see: /Library/Frameworks/Python.framework/Versions/3.11/bin/python3 So QGIS, at least on a Mac, does seem to have it's own version of Python installed. And there is not clear way, again on a Mac at least, to pip install to the QGIS Python such that a plugin will be able to see a package. Now, this said, on my Linux machine, installing my Whitebox Workflows plugin did not run into an error at all and so I'm left wondering if this is perhaps, as Greg suggested, a particular binary distribution issue related to QGIS on MacOS. Could be. Regards, John Prof. John Lindsay Dept. of Geography, Environment & Geomatics, The University of Guelph, Room 122, Hutt Building, E-mail: jlind...@uoguelph.ca<mailto:jlind...@uoguelph.ca> Phone: (519) 824-4120 ext. 56074 Web: https://geg.uoguelph.ca/faculty/lindsay-john Research page: https://jblindsay.github.io/ghrg/index.html WhiteboxTools GIS project: https://www.whiteboxgeo.com/ Twitter: https://twitter.com/whiteboxgeo ________________________________ From: David Strip <qgis-...@stripfamily.net><mailto:qgis-...@stripfamily.net> Sent: Friday, January 19, 2024 1:10 PM To: Greg Troxel <g...@lexort.com><mailto:g...@lexort.com>; John Lindsay <jlind...@uoguelph.ca><mailto:jlind...@uoguelph.ca> Cc: John Lindsay via QGIS-Developer <qgis-developer@lists.osgeo.org><mailto:qgis-developer@lists.osgeo.org> Subject: Re: [QGIS-Developer] QGIS plugin depends on pypi package CAUTION: This email originated from outside of the University of Guelph. Do not click links or open attachments unless you recognize the sender and know the content is safe. If in doubt, forward suspicious emails to ith...@uoguelph.ca<mailto:ith...@uoguelph.ca>. On 1/19/2024 10:59 AM, Greg Troxel via QGIS-Developer wrote: When you say "qgis seems to use its own version", I wonder if that is in the context of particular binary distribution. And if there really is a full extra copy of libs, or if it's about a per-user site-packages directory. The OS4Geo binary distribution contains a Python39 directory which is a full python installation including python.exe, a Lib directory which in turn contains a site-packages directory. As least in my case, this is installed system-wide, not per-user _______________________________________________ QGIS-Developer mailing list QGIS-Developer@lists.osgeo.org<mailto:QGIS-Developer@lists.osgeo.org> List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer
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