Hi Aron,
with the EnMAP-Box plugin we are confronted with missing PIP packages
quite often. Therefore we implemented a "PIP Package Installer"
(screenshot below, source code here:
https://bitbucket.org/hu-geomatics/enmap-box/src/develop/enmapbox/dependencycheck.py)
In case of missing admin rights you can use the PIP "--user" argument to
install packages to the user's home folder
D:\OSGeo4W\bin\python3.EXE -m pip install --user lightgbm
The absolute python executable path can be retrieved with
"shutil.which('python') "
Greetings,
Benjamin
On 2022-04-06 14:01, Aron Gergely via QGIS-Developer wrote:
@Pedro:
Tried it today on Windows w OSGeo QGIS and failed right away. But in a
different way:
If I launch OSGeo QGIS and ask for the python executable's path
(sys.executabe), I get 'C:/OSGeo4W/bin/qgis-bin.exe'. which looks like
entry point is for QGIS. So subprocess calls that and a new QGIS
window opens.
Not feeling like tackling this and probably other cases.
So back to download+including those bins I reckon.
@Johannes:
Thank you. Yes realizing that now..
Cheers,
Aron
On 06-04-2022 12:12, Johannes Kröger (WhereGroup) wrote:
Trying to find a smart way to install Python dependencies for the users
that will not potentially not work or even break stuff is a very hard
thing(tm). Check out these two QEPs for a lot of discussion and
possible approaches:
https://github.com/qgis/QGIS-Enhancement-Proposals/issues/202
https://github.com/qgis/QGIS-Enhancement-Proposals/issues/179
Cheers, Hannes
Am 06.04.22 um 00:10 schrieb Pedro Camargo via QGIS-Developer:
Hey Aron,
I did explore that route, but I found out that it would fail when the
user did not have administrator rights (or even if QGIS had not been
ran as administrator on Windows). Did you find it to be different?
Cheers,
Pedro
---- On Wed, 06 Apr 2022 03:28:09 +1000 Aron Gergely
<aron.gerg...@rasterra.nl> wrote ----
Thank you, I checked out your plugin - yes that seems also a good way.
I already had the logic to detect, throw message, guide to dialog,
etc... implemented similar to yours.
But I wanted to let pip manage the actual package, so I went with the
subprocess+pip route. Here is a minimum working example:
import subprocess
import sys
try:
subprocess.check_call((sys.executable, '-m', 'pip', 'install',
'h3<=3.99'))
except subprocess.CalledProcessError as e:
raise e # handle any errors here instead
I connected it to a button in a dialog. And catch stdout, stderr and
the exit code of the subprocess so I can show the user what is
happening.
Have not yet tried on other platforms than Linux. But sys.executable is
there to solve the ambiguity of python executable path.
Best regards,
Aron
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