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show build backend used on --debug

View original Launchpad issue

Metadata

Project
snapcraft (launchpad)
Number
#1835158
Type
issue
State
open
Author
~techtonik
Labels
Created
Updated
Closed

Current evaluation

Feature request from the snapcraft 2.x era to log which VM/LXD build backend is used when running with --debug, to diagnose slow builds. No maintainer response; the old provider code has since been replaced by craft-providers in snapcraft 7.x.

Suggested action: close stale

Reason: The issue is 2617 days old with zero comments, no labels, and no maintainer interaction, and it targets snapcraft 2.x provider code (the 'Launching a VM'/'Retrieving image' messages) that was completely replaced by craft-providers in the 7.x rewrite, so the affected version is no longer supported and the original problem is no longer reproducible there. Modern snapcraft --debug already surfaces detailed craft-providers/LXD instance logging, making the specific request moot. Confidence is moderate because repository tools failed to pin a SHA, so I could not directly confirm current debug output.

Impact: 20 Quick Win: 17.0 Staleness: 92 Complexity: 15 Confidence: 60 Support Request: 25

Issue body

snapcraft is slow and I can't check why. It probably ignores my LXD and uses some heavy-weight VM mechanism. It would be useful to get some info which VM backend is used when debug flag is specified. $ snapcraft --debug Using 'snap/snapcraft.yaml': Project assets will be searched for from the 'snap' directory. Launching a VM. Retrieving image: 6%^C Aborted!

Evaluation history

Date Model Scores Action Summary
qwen/qwen3.8-27b
Impact: 20
Quick Win: 17.0
Staleness: 92
Complexity: 15
Confidence: 60
Support Request: 25
close stale Feature request from the snapcraft 2.x era to log which VM/LXD build backend is used when running with --debug, to diagnose slow builds. No maintainer response; the old provider code has since been replaced by craft-providers in snapcraft 7.x.
qwen/qwen3.6-35b-a3b
Staleness: 98
Complexity: 10
Confidence: 85
Support Request: 30
close stale Feature request to display the specific build backend (e.g., LXD or VM) in debug output. Unaddressed for over 7 years with no maintainer interaction.
qwen/qwen3.6-35b-a3b
Staleness: 95
Complexity: 15
Confidence: 85
Support Request: 20
close stale Request to print the active build backend in debug output. Unlabelled, zero maintainer interaction, and inactive for nearly 7 years.
qwen3.6-35b-a3b-mtp-q6
Staleness: 95
Complexity: 15
Confidence: 85
Support Request: 10
close stale Feature request to display the active build backend when running snapcraft with the debug flag. Issue is over 7 years old with no maintainer comments or labels.
qwen3.6-35b-a3b-mtp-q6
Staleness: 95
Complexity: 15
Confidence: 80
Support Request: 20
close stale Feature request to display the active build backend in debug output. Issue is over 7 years old with no maintainer engagement or labels.

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