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RuntimeWarning: compiletime version 3.8 of module 'msgpack._packer' does not match runtime version 3.6

View original Launchpad issue

Metadata

Project
snapcraft (launchpad)
Number
#1956157
Type
issue
State
open
Author
~kenneth-loafman
Labels
—
Created
Updated
Closed
—

Current evaluation

Duplicity snap's status command against a Dropbox backend prints a Python 3.6/3.8 msgpack compiletime-vs-runtime RuntimeWarning, apparently from staging mixed python versions. Reporter worked around it recipe-side; never triaged by maintainers.

Suggested action: needs triage

Reason: The issue has no labels, no assignee and no maintainer response — both comments are self-comments from the reporter, including his 2022-02-20 note that he "fixed this by building on core20 and specifying '; python_version == '3.8'" as a recipe-side workaround. No snapcraft.yaml, build log, or evidence that the python plugin itself staged the conflicting python3.6/3.7/3.8 packages is provided, so it is undecided whether this is a snapcraft defect or a duplicity packaging mistake; the linked sibling bug #1886717 (same author) was self-closed as no longer reproducible, so no fix commit can be cited.

Evaluated by: mr-cal-bot

Impact: 30 Quick Win: 5 Complexity: 60 Confidence: 55 Actionability: 38

Issue body

duplicity status against dropbox backend (dpbx://) returns: /snap/duplicity/214/usr/lib/python3.6/importlib/_bootstrap.py:219: RuntimeWarning: compiletime version 3.8 of module 'msgpack._packer' does not match runtime version 3.6

Evaluation history

Date Model Scores Action Summary
stealth/space-bunny-alpha
Impact: 30
Quick Win: 5
Complexity: 60
Confidence: 55
Actionability: 38
needs triage Duplicity snap's status command against a Dropbox backend prints a Python 3.6/3.8 msgpack compiletime-vs-runtime RuntimeWarning, apparently from staging mixed python versions. Reporter worked around it recipe-side; never triaged by maintainers.
stealth/space-bunny-alpha
Impact: 42
Quick Win: 14
Complexity: 38
Confidence: 76
Actionability: 55
needs triage Duplicity's Dropbox status emits a msgpack warning after mixing Python 3.8 and 3.6 packages. The reporter used core20 and package filtering as a workaround, but maintainers have not triaged the report.
stealth/space-bunny-alpha
Impact: 25
Quick Win: 5
Complexity: 65
Confidence: 94
Actionability: 55
needs triage Duplicity’s Dropbox backend emits an ABI mismatch warning for msgpack._packer, compiled with Python 3.8 but running on Python 3.6; the unlabelled report is awaiting triage.
qwen/qwen3.8-27b
Impact: 20
Quick Win: 15
Staleness: 95
Complexity: 25
Confidence: 65
Support Request: 10
close stale duplicity status against dropbox backend emits RuntimeWarning about msgpack._packer compiled with Python 3.8 but running under Python 3.6. No maintainer interaction in 1703 days; Python 3.6 is long EOL and the snap ecosystem has moved past this version mismatch.
qwen/qwen3.6-35b-a3b
Staleness: 98
Complexity: 15
Confidence: 92
Support Request: 75
close stale Reports a Python version mismatch warning from the msgpack module when running duplicity against Dropbox. Issue is inactive with no maintainer response or labels.
qwen/qwen3.6-35b-a3b
Staleness: 98
Complexity: 20
Confidence: 90
Support Request: 10
close stale Reports a Python version mismatch warning from msgpack when running duplicity via snap. No maintainer response or activity for over four years.
qwen3.6-35b-a3b-mtp-q6
Staleness: 95
Complexity: 15
Confidence: 90
Support Request: 75
close stale Reports a Python version mismatch warning from msgpack when running duplicity on an old snap package. Issue is over 4 years old with no maintainer response.

Update history

Date Change
created

Related work

  • Related To: snapcraft (launchpad)#1886717 (confidence 70%)

    Explicitly linked by the author as possibly related ('This may be related to ...'); same reporter, same class of problem where snapcraft/base dist-packages supplies a different package version than requested — that bug was self-closed in Feb 2022 as no longer reproducible, so it provides no resolution for this one.

Related issues

No related issues found above the similarity threshold.