I wanted to install a plugin, but it requires scipy. Thus I realized that QGIS use the default python3 installation. I tried to launch it from a conda virtual environment, as advised in this related stackexchange question, but I end up with the "Couldn't load SIP module." Issue#37783 (which isn't resolved imho).
My QGIS installation is system-wide (
How can I make QGIS use a conda virtual environment for python libraries?
QGIS and OS versions
|QGIS version||3.16.1-Hannover||QGIS code revision||b381a90dca|
|Compiled against Qt||5.12.8||Running against Qt||5.12.8|
|Compiled against GDAL/OGR||3.0.4||Running against GDAL/OGR||3.0.4|
|Compiled against GEOS||3.8.0-CAPI-1.13.1||Running against GEOS||3.8.0-CAPI-1.13.1|
|Compiled against SQLite||3.31.1||Running against SQLite||3.31.1|
|PostgreSQL Client Version||12.5 (Ubuntu 12.5-0ubuntu0.20.04.1)||SpatiaLite Version||4.3.0a|
|QWT Version||6.1.4||QScintilla2 Version||2.11.2|
|Compiled against PROJ||6.3.1||Running against PROJ||Rel. 6.3.1, February 10th, 2020|
|OS Version||Ubuntu 20.04.1 LTS|
|Active python plugins||openlayers_plugin; MetaSearch; processing|