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<p>Luigi Pirelli,</p>
<p>thank you so much for your hints.</p>
<p>My QGIS 3.4.2 /GRASS installation is as follows:</p>
<p>PATH=C:\OSGEO4~1\apps\qgis\bin;C:\OSGEO4~1\apps\grass\grass-7.4.2\lib;C:\OSGEO4~1\apps\grass\grass-7.4.2\bin;C:\OSGEO4~1\apps\Python37;C:\OSGEO4~1\apps\Python37\Scripts;C:\OSGEO4~1\apps\qt5\bin;C:\Rtools\bin;C:\Rtools\mingw_32\bin;C:\Rtools\mingw_64\bin;C:\Program
Files\MiKTeX
2.9\miktex\bin;C:\OSGEO4~1\apps\Python27\Scripts;C:\OSGEO4~1\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\system32\WBem;C:\OSGEO4~1\apps\msys\bin;C:\Program
Files\R\R-3.4.4\bin\x64;C:\Program Files\RStudio\bin<br>
GDAL_DATA=C:\OSGEO4~1\share\gdal<br>
GDAL_DRIVER_PATH=C:\OSGEO4~1\bin\gdalplugins<br>
GDAL_FILENAME_IS_UTF8=YES<br>
GEOTIFF_CSV=C:\OSGEO4~1\share\epsg_csv<br>
GISBASE=C:\OSGEO4~1\apps\grass\grass-7.4.2<br>
GRASS_PROJSHARE=C:\OSGEO4~1\share\proj<br>
GRASS_PYTHON=C:\OSGEO4~1\bin\python.exe<br>
JPEGMEM=1000000<br>
OSGEO4W_ROOT=C:\OSGEO4~1<br>
PROJ_LIB=C:\OSGEO4~1\share\proj<br>
PYTHONHOME=C:\OSGEO4~1\apps\Python37<br>
QGIS_PREFIX_PATH=C:/OSGEO4~1/apps/qgis<br>
QT_PLUGIN_PATH=C:\OSGEO4~1\apps\qgis\qtplugins;C:\OSGEO4~1\apps\qt5\plugins<br>
QT_RASTER_CLIP_LIMIT=4096<br>
VSI_CACHE=TRUE<br>
VSI_CACHE_SIZE=1000000<br>
O4W_QT_PREFIX=C:/OSGEO4~1/apps/Qt5<br>
O4W_QT_BINARIES=C:/OSGEO4~1/apps/Qt5/bin<br>
O4W_QT_PLUGINS=C:/OSGEO4~1/apps/Qt5/plugins<br>
O4W_QT_LIBRARIES=C:/OSGEO4~1/apps/Qt5/lib<br>
O4W_QT_TRANSLATIONS=C:/OSGEO4~1/apps/Qt5/translations<br>
O4W_QT_HEADERS=C:/OSGEO4~1/apps/Qt5/include</p>
<p>I am not sure if these settings are those you want to see. If you
do need more, please let me know. <br>
</p>
<p>As far as I understood the QGIS 3.4.2 settings GRASS 7.4.2 should
be used. After I read your comment on the path issues I checked
the /apps/grass folder. 3 different versions are installed there:</p>
<p>grass-6.4.3</p>
<p>grass-7.4.2</p>
<p>grass-7.7.svn</p>
<p>In accordance to your advice I removed the .svn term from the
GRASS 7.7 folder name and - it works. I can use now the GRASS
commands in QGIS 3.4.2. Additionally I changed in the same way the
folder name in the grass77svn.bat and the related env.bat using
GRASS 7.7.svn as a stand-alone application as well. <br>
</p>
<p>I am wondering which GRASS version QGIS 3.4.2 actually is using?
Unfortunately in the QGIS 3.4.2 menu
Settings/Options/Processing/Providers/GRASS there is no longer an
option available that allows to define the path to the correct
GRASS version (as it was in QGIS 3.2.1 - which was my last QGIS 3
version). <br>
</p>
<p>Best regards</p>
<p>Martin<br>
</p>
<p><br>
</p>
<div class="moz-cite-prefix">Am 12/10/2018 um 4:48 PM schrieb Luigi
Pirelli:<br>
</div>
<blockquote type="cite"
cite="mid:CAFO80_rH7iM7ggNa37E2A05xE1-iYOi8RxstT1N1E0-+hETs0A@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr">
<div dir="ltr">processing Grass7Utils.py is trying to understand
the grass folders assuming that the path is something like
grass-<dot version as 7.4>... in your case this path is
grass-svn => bang! trying to convert it as int! it's, I'm
almost sure, a bug... can you fill an issue in <a
href="https://issues.qgis.org/projects/qgis/issues/new"
moz-do-not-send="true">https://issues.qgis.org/projects/qgis/issues/new</a></div>
<div dir="ltr"><br>
</div>
<div>the fix is simple, but please share more about what is your
qgis installation and grass configuration</div>
<div><br>
</div>
<div>regards</div>
<div dir="ltr"><br clear="all">
<div>
<div dir="ltr" class="gmail_signature">Luigi Pirelli<br>
<br>
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</div>
<br>
<div class="gmail_quote">
<div dir="ltr">On Mon, 10 Dec 2018 at 19:09, Martin Bittens <<a
href="mailto:martin.bittens@gmx.de" moz-do-not-send="true">martin.bittens@gmx.de</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hello!<br>
<br>
Today I made an update to QGIS 3.4.2 and now I can't use
anymore the <br>
GRASS commands in the toolbox The following python error
message appears <br>
when I try to open a GRASS command:<br>
<br>
2018-12-10T16:00:28 WARNING Traceback (most recent call
last):<br>
File <br>
"C:/OSGEO4~1/apps/qgis/./python/plugins\processing\gui\ProcessingToolbox.py",
<br>
line 223, in executeAlgorithm<br>
ok, message = alg.canExecute()<br>
File <br>
"C:/OSGEO4~1/apps/qgis/./python/plugins\processing\algs\grass7\Grass7Algorithm.py",
<br>
line 1020, in canExecute<br>
message = Grass7Utils.checkGrassIsInstalled()<br>
File <br>
"C:/OSGEO4~1/apps/qgis/./python/plugins\processing\algs\grass7\Grass7Utils.py",
<br>
line 468, in checkGrassIsInstalled<br>
if Grass7Utils.installedVersion() is not None:<br>
File <br>
"C:/OSGEO4~1/apps/qgis/./python/plugins\processing\algs\grass7\Grass7Utils.py",
<br>
line 98, in installedVersion<br>
if Grass7Utils.grassBin() is None:<br>
File <br>
"C:/OSGEO4~1/apps/qgis/./python/plugins\processing\algs\grass7\Grass7Utils.py",
<br>
line 153, in grassBin<br>
path = Grass7Utils.grassPath()<br>
File <br>
"C:/OSGEO4~1/apps/qgis/./python/plugins\processing\algs\grass7\Grass7Utils.py",
<br>
line 212, in grassPath<br>
grassfolders = sorted([f for f in
os.listdir(testfolder) <br>
if f.startswith("grass-7.") and
os.path.isdir(os.path.join(testfolder, <br>
f))], reverse=True, key=lambda x: [int(v) for v in <br>
x[len("grass-"):].split('.')])<br>
File <br>
"C:/OSGEO4~1/apps/qgis/./python/plugins\processing\algs\grass7\Grass7Utils.py",
<br>
line 212, in<br>
grassfolders = sorted([f for f in
os.listdir(testfolder) <br>
if f.startswith("grass-7.") and
os.path.isdir(os.path.join(testfolder, <br>
f))], reverse=True, key=lambda x: [int(v) for v in <br>
x[len("grass-"):].split('.')])<br>
File <br>
"C:/OSGEO4~1/apps/qgis/./python/plugins\processing\algs\grass7\Grass7Utils.py",
<br>
line 212, in<br>
grassfolders = sorted([f for f in
os.listdir(testfolder) <br>
if f.startswith("grass-7.") and
os.path.isdir(os.path.join(testfolder, <br>
f))], reverse=True, key=lambda x: [int(v) for v in <br>
x[len("grass-"):].split('.')])<br>
ValueError: invalid literal for int() with base
10: 'svn'<br>
<br>
<br>
The GRASS plug-in is working (with GRASS 7.4.2). I am running
a Windows <br>
10 machine.<br>
<br>
Does anybody know how to solve the problem?<br>
<br>
Thank very much<br>
<br>
<br>
Martin<br>
<br>
<br>
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