[osgeo4w-dev] [osgeo4w] #734: GISBASE Environment not set

[OSGeo4W]

#734: GISBASE Environment not set
---------------------+---------------------------
Reporter:  aharfoot  |      Owner:  osgeo4w-dev@…
    Type:  defect    |     Status:  new
Priority:  minor     |  Component:  Installer
 Version:            |   Keywords:
---------------------+---------------------------
 When I install QGIS LTR 3.22.4 using the package based installer
 (individual packages, not the meta-package) along with GRASS 7.8 and run
 the C:\OSGeo4W\bin\qgis-ltr-bin.exe, the GRASS processing provider is
 broken, and trying to run any GRASS processing tool gives the following
 error:

 ''This algorithm cannot be run :-(
 The specified GRASS 7 folder "C:\OSGeo4W\bin\bin" does not contain a valid
 set of GRASS 7 modules. Please, go to the Processing settings dialog, and
 check that the GRASS 7 folder is correctly configured''

 The same behaviour is not seen with the standalone QGIS installer.

 From #47163 I can see that this message is returned by Grass7Utils.py, and
 after some exploration I discovered that this is because the GISBASE
 environment variable is not set.

 If QGIS is launched via the batch file: C:\OSGeo4W\bin\qgis-ltr.bat, then
 GISBASE is correctly set and the GRASS processing tool function correctly.

 The OSGeo4W package based installer creates a Windows shortcut that points
 to the C:\OSGeo4W\bin\qgis-ltr-bin.exe, and therefore when this is run,
 the bug exhibits itself.

 **Steps to reproduce the issue**

 With the OSGeo4W package installer, install QGIS LTR 3.22.4 along with
 GRASS 7.8 (7.8.7-1) on MS Windows. Load QGIS via the Start Menu shortcut.
 In QGIS, open the Processing panel and double click on a tool from the
 GRASS provider.

 Check the status of the GISBASE environment variable through the QGIS
 python console by executing:

 {{{
 os.environ['GISBASE']
 }}}


 **Environment:**

 QGIS: 3.22.4
 GRASS: 7.8.7-1
 OS: Windows 10 64bit

-- 
Ticket URL: <https://trac.osgeo.org/osgeo4w/ticket/734>
OSGeo4W <http://trac.osgeo.org/osgeo4w>
OSGeo4W is the Windows installer and package environment for the OSGeo stack.