pyqt5 cannot load xcb plugin
Metadata
Current evaluation
PyQt5 snap fails to load xcb platform plugin due to undefined Qt symbol in libQt5XcbQpa, indicating a Qt library version mismatch. 8+ years old, zero comments, no labels, no maintainer interaction.
Suggested action: close stale
Reason: The issue is 3060 days (~8.4 years) old with zero comments, zero labels, and no maintainer interaction. The underlying problem — a Qt library ABI mismatch causing an undefined symbol in the xcb platform plugin — is a well-known snap packaging issue that has been addressed through the desktop-qt5 extension (present in the current codebase under extensions/desktop/) and improved snapcraft tooling. The original DEXBot snap and the snapcraft version from that era are no longer relevant to the current project.
Impact:
15
Quick Win:
9.0
Staleness:
95
Complexity:
40
Confidence:
70
Support Request:
75
Issue body
I am attempting to create a snap for a PyQt5 project.
See http://github.com/ihaywood3/DEXBot/tree/snap
Got keys from plugin meta data ("xcb")
QFactoryLoader::QFactoryLoader() checking directory path "/snap/dexbot/x9/usr/bin/platforms" ...
Cannot load library /snap/dexbot/x9/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so: (/snap/dexbot/x9/usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5: undefined symbol: _ZNK14QPlatformTheme14fileIconPixmapERK9QFileInfoRK6QSizeF6QFlagsINS_10IconOptionEE)
QLibraryPrivate::loadPlugin failed on "/snap/dexbot/x9/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so" : "Cannot load library /snap/dexbot/x9/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so: (/snap/dexbot/x9/usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5: undefined symbol: _ZNK14QPlatformTheme14fileIconPixmapERK9QFileInfoRK6QSizeF6QFlagsINS_10IconOptionEE)"
This application failed to start because it could not find or load the Qt platform plugin "xcb"
in "".
Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, xcb, vnc.
Reinstalling the application may fix this problem.
Aborted (core dumped)
I cannot get past this error. I have included desktop-qt5 as a part, and I cannot understand why all required Qt5 libraries are not available.
The missing identifier ("PlatformTheme14...") is found in
the platform theme plugins libqgtk2.so and libappmenu-qt5.so, both are available in the snap.
Evaluation history
| Date | Model | Scores | Action | Summary |
|---|---|---|---|---|
| qwen/qwen3.8-27b |
Impact:
15
Quick Win:
9.0
Staleness:
95
Complexity:
40
Confidence:
70
Support Request:
75
|
close stale | PyQt5 snap fails to load xcb platform plugin due to undefined Qt symbol in libQt5XcbQpa, indicating a Qt library version mismatch. 8+ years old, zero comments, no labels, no maintainer interaction. | |
| qwen/qwen3.6-35b-a3b |
Staleness:
98
Complexity:
55
Confidence:
90
Support Request:
85
|
close stale | User reports PyQt5 XCB plugin loading failure in a snap due to undefined Qt symbols. The report lacks maintainer interaction, labels, or comments, and remains unresolved after over eight years. | |
| qwen/qwen3.6-35b-a3b |
Staleness:
98
Complexity:
40
Confidence:
90
Support Request:
95
|
close stale | User reports PyQt5 failing to load the xcb plugin in a snap package due to undefined Qt symbols. The issue has been inactive for over 8 years with no maintainer response or labels. | |
| qwen3.6-35b-a3b-mtp-q6 |
Staleness:
100
Complexity:
40
Confidence:
90
Support Request:
70
|
close stale | PyQt5 snap fails to load xcb plugin due to undefined Qt5 symbol. No maintainer response or labels after ~8 years of inactivity. | |
| qwen3.6-35b-a3b-mtp-q6 |
Staleness:
98
Complexity:
40
Confidence:
90
Support Request:
80
|
close stale | User reports PyQt5 xcb plugin loading failure in a snap package due to undefined Qt symbols. Issue is 8 years old, has no maintainer interaction, and likely involves outdated dependencies. |
Update history
No update history recorded yet.
Related issues
| Issue | Project | State | Summary | Similarity |
|---|---|---|---|---|
| #1859008 PyQt5 does not work from pip | snapcraft (launchpad) | open | PyQt5 from pip fails in snaps with xcb plugin load error; reporter notes the PyQt5 stage package works. No maintainer response, no labels, 0 comments, 2426 days old. |