Description: Grass GIS is usually available in QGIS through two components : processing algorithms and as an extension. Processing allow to run some Grass GIS algorithm whereas Grass GIS extension is a complete integration of Grass GIS in Qgis. Nowaday Qgis is a toolbox of multiple GIS tools such as Gdal ... Previously in Archlinux, we were able to install Qgis and lately install Grass GIS. Then launching Qgis and running Grass GIS as a QGIS extension was possible. It's not more feasible and provide a counter productive use of QGIS under Archlinux.

grass folder in /usr/share/qgis/grass is not available in list files


Additional info:
* package version(s) : QGIS 3.12.0-1
* config and/or log files etc.
* link to upstream bug report, if any : not related, was working before

Steps to reproduce:

1) Install QGIS,
2) Install GRASS GIS from AUR (only available in AUR unforunately even if major GIS package)
3) Open QGIS and look for GRASS GIS extension from Menu Extension => Install and Manage Extension
=> no Grass GIS extension available.
4) Rebuild package QGIS with GRASS GIS installed and you could see GRASS extension present in QGIS