[GRASS-user] can't install and execute python script

[Frank David]

Hello,

I've installed GRASS 7.8.3 on Ubuntu 20.10 (groovy) and when I try to 
install my own python script, the message is :

Fetching <r.wtg> from 
</media/zephyr/ress/informatique/scripts/grass/scripts/r.wtg> (be 
patient)...
Compiling...
/bin/sh: 1: 
/tmp/grass7-geophom-78286/tmp1tw0ncyb/r.wtg/scripts/r.wtg.visibility.threshold: 
not found
/bin/sh: 1: 
/tmp/grass7-geophom-78286/tmp1tw0ncyb/r.wtg/scripts/r.wtg.visibility.conv: 
not found
/bin/sh: 1: 
/tmp/grass7-geophom-78286/tmp1tw0ncyb/r.wtg/scripts/r.wtg.surround: not 
found
/bin/sh: 1: 
/tmp/grass7-geophom-78286/tmp1tw0ncyb/r.wtg/scripts/r.wtg.visibility: 
not found
/bin/sh: 1: 
/tmp/grass7-geophom-78286/tmp1tw0ncyb/r.wtg/scripts/r.wtg.intervisibility: 
not found
/bin/sh: 1: 
/tmp/grass7-geophom-78286/tmp1tw0ncyb/r.wtg/scripts/r.wtg.visual.area: 
not found
/bin/sh: 1: 
/tmp/grass7-geophom-78286/tmp1tw0ncyb/r.wtg/scripts/r.wtg.visual.cone: 
not found
/bin/sh: 1: 
/tmp/grass7-geophom-78286/tmp1tw0ncyb/r.wtg/scripts/r.wtg.visual.competition: 
not found
/bin/sh: 1: 
/tmp/grass7-geophom-78286/tmp1tw0ncyb/r.wtg/scripts/r.wtg.horizontal.visibility: 
not found
/bin/sh: 1: 
/tmp/grass7-geophom-78286/tmp1tw0ncyb/r.wtg/scripts/r.terrain.vertical.angle: 
not found
/bin/sh: 1: 
/tmp/grass7-geophom-78286/tmp1tw0ncyb/r.wtg/scripts/r.terrain.horizon: 
not found
/bin/sh: 1: 
/tmp/grass7-geophom-78286/tmp1tw0ncyb/r.wtg/scripts/r.wtg.pit2hwtg: not 
found
/bin/sh: 1: 
/tmp/grass7-geophom-78286/tmp1tw0ncyb/r.wtg/scripts/r.wtg.overhang: not 
found
/bin/sh: 1: 
/tmp/grass7-geophom-78286/tmp1tw0ncyb/r.wtg/scripts/v.wtg.visibility.what: 
not found
/bin/sh: 1: 
/tmp/grass7-geophom-78286/tmp1tw0ncyb/r.wtg/scripts/r.wtg.series: not found
/bin/sh: 1: 
/tmp/grass7-geophom-78286/tmp1tw0ncyb/r.wtg/scripts/v.wtg.surround: not 
found
/bin/sh: 1: 
/tmp/grass7-geophom-78286/tmp1tw0ncyb/r.wtg/scripts/g.wtg.listfromtable: 
not found
/bin/sh: 1: 
/tmp/grass7-geophom-78286/tmp1tw0ncyb/r.wtg/scripts/v.wtg.drawline: not 
found
/bin/sh: 1: 
/tmp/grass7-geophom-78286/tmp1tw0ncyb/r.wtg/scripts/v.wtg.transect: not 
found
Installing...
Updating private addons metadata file...
WARNING: No addons metadata available. Addons metadata file not updated.
Installation of <r.wtg> successfully finished

All files are well copied in /home/me/.grass7/addons/scripts

And when i want to execute one of them (here r.wtg.visibility), I get :

Traceback (most recent call last):
   File "/usr/lib/grass78/etc/python/grass/script/task.py",
line 473, in get_interface_description

p = Popen([cmd, '--interface-description'], stdout=PIPE,
   File "/usr/lib/grass78/etc/python/grass/script/core.py",
line 63, in __init__

subprocess.Popen.__init__(self, args, **kwargs)
   File "/usr/lib/python3.8/subprocess.py", line 854, in
__init__

self._execute_child(args, executable, preexec_fn, close_fds,
   File "/usr/lib/python3.8/subprocess.py", line 1702, in
_execute_child

raise child_exception_type(errno_num, err_msg, err_filename)
FileNotFoundError
:
[Errno 2] No such file or directory: 'r.wtg.visibility'
During handling of the above exception, another exception
occurred:
Traceback (most recent call last):
   File "/usr/lib/grass78/gui/wxpython/gui_core/prompt.py",
line 272, in OnItemSelected

self.cmdDesc = gtask.parse_interface(cmd)
   File "/usr/lib/grass78/etc/python/grass/script/task.py",
line 522, in parse_interface

tree = etree.fromstring(get_interface_description(name))
   File "/usr/lib/grass78/etc/python/grass/script/task.py",
line 501, in get_interface_description

raise ScriptError(_("Unable to fetch interface description
for command '<{cmd}>'."
grass.exceptions
.
ScriptError
:
Unable to fetch interface description for command
'<r.wtg.visibility>'.
Details: <[Errno 2] No such file or directory:
'r.wtg.visibility'>

If i rename a script with .py, I can execute it from the menu 
File>execute script

I have two other Grass (7.9) on Debian Buster and it works fine...

The $GRASS_ADDON_BASE = /home/me/.grass7/addons
The $GRASS_ADDON_PATH = /home/me/.grass7/addons/scripts

Do you have any idea that problem ?

Thank you for your help.

Frank David
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