Please improve 'Missing dependency' error message

[qgib]

Author Name: Markus Neteler (Markus Neteler)
Original Redmine Issue: 13188
Affected QGIS version: 2.10.1
Redmine category:processing/grass
Assignee: Victor Olaya

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Using QGIS 2.10 on Linux (also elsewhere), does not let me run GRASS GIS 7 through processing any more.

The issue is likely that Processing searches for a specific name to start GRASS 7 ('grass', 'grass7', 'grass70', 'grass-7', ... who knows??) which is not present on the system as such.

Subsequently the following error message pops up but does not tell me what it was actually looking for:

Missing dependency. This algorithm cannot be run :-( 
This algorithm requires GRASS GIS 7 to be run. Unfortunately, it seems that GRASS GIS 7 is not installed in your system, or it is not correctly configured to be used from QGIS
Click here to know more about how to install and configure GRASS GIS 7 to be used with QGIS

Solution: include in the message the command string which failed (the hardcoded? name which Processing actually expects here so that the user can create a link to the true startup script name of GRASS 7). The current error message above is rather useless as such.

I tried to find the name Processing expects in the Python code but could not identify it.

A lot of people have this issue (see gis.stackexchange.com etc) but no clue how to solve it.

[qgib]

Author Name: Giovanni Manghi (@gioman)

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• crashes_corrupts_data was configured as 0
• project_id was changed from 78 to 17
• category_id removed 59

[qgib]

Author Name: Markus Neteler (Markus Neteler)

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... I would be glad to know the GRASS startup script name Processing expects.

I tick again "Causes crash or corruption" because it simply doesn't work so far.

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• version was configured as 2.10.1
• crashes_corrupts_data was changed from 0 to 1

[qgib]

Author Name: Markus Neteler (Markus Neteler)

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See also bug #21142

[qgib]

Author Name: Jürgen Fischer (@jef-n)

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• category_id was configured as Processing/GRASS

[qgib]

Author Name: Alexander Bruy (@alexbruy)

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Fixed in changeset "75926f52aaf479bbe663978b05b7ba216cea137e".

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• status_id was changed from Open to Closed

[qgib]

Author Name: Alexander Bruy (@alexbruy)

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"Missing dependency" message was removed from Processing during UI/UX improvements. But I added GRASS path to the similar message, hope it helps.

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• resolution was changed from to fixed/implemented