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+---- Thread: Error importing PyQt5 (/showthread.php?tid=9228)
Error importing PyQt5 - bunburya - 02-19-2020
Hi everyone,
I am looking into building GUIs with Python on postmarketOS. I am (currently) using plasma-mobile so I figured it would make sense to use PyQt5, maybe with Kirigami. So I installed py3-qt5 (version 5.13.1-r1) from the community repository using APK. However, when I go to import QtGui from PyQt5 in python3 I get the following error:
Code:
Python 3.8.1 (default, Jan 19 2020, 11:48:03)
[GCC 9.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from PyQt5 import QtGui
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: Error relocating /usr/lib/python3.8/site-packages/PyQt5/QtGui.so: _ZNK17QOpenGLTimerQuery16waitForTimestampEv: symbol not foundTrying to import QtWidgets gives the same error.
As well as the required dependencies for py3-qt5, I also installed py3-opengl to see if it would solve the problem (given the content of the error message) but it didn't help. I also installed qutebrowser and its dependencies and, although I can't see the full error message it returns, it appears to have the exact same problem. The full list of packages I have installed can be found at https://pastebin.com/HmgzaNPm.
Can anyone shed any light of what is wrong here? Googling around doesn't really yield any relevant results. I am reasonably familiar with Python but less so with Qt or C++. So I'm not sure if I am missing something here.
Thanks!
RE: Error importing PyQt5 - PureTryOut - 02-20-2020
Seems like PyQt5 needs a rebuild. However, I just tried the same on my Alpine laptop (running the latest edge) and it works fine, so I guess it has been rebuild already.
Please update your system, `apk update && apk upgrade -a`, and try again
RE: Error importing PyQt5 - bunburya - 02-20-2020
Hi there, thanks for your advice. I ran update and upgrade -a and the issue remains. For the record, py3-qt5 was not upgraded (nor were any qt-related packages).
Interesting that you do not have the same issue on your laptop. Is anyone able to replicate this on a pinephone?
RE: Error importing PyQt5 - PureTryOut - 02-21-2020
Although "upgrade -a" should've already installed the latest version available, could you verify that you have py3-qt5 version 5.13.1-r1 installed? "apk list -I | grep py3-qt5"
RE: Error importing PyQt5 - bunburya - 02-21-2020
Confirmed:
Code:
py3-qt5-5.13.1-r1 aarch64 {py3-qt5} (GPL-2.0-or-later) [installed]RE: Error importing PyQt5 - PureTryOut - 02-22-2020
Well I guess the only thing you can do then is rebuild the package yourself.
RE: Error importing PyQt5 - anjanmomi - 02-23-2020
I had the same bug. I reported it to alpine linux's aports here: https://gitlab.alpinelinux.org/alpine/aports/issues/11244
trying to build py3-qt5 with the supplied APKBUILD results in:
Code:
>>> py3-qt5: Analyzing dependencies...
mesa-git-gbm-0_git20200202-r2:
breaks: mesa-dev-19.3.4-r1[mesa-gbm=19.3.4-r1]
satisfies: mesa-git-dri-gallium-0_git20200202-r2[mesa-git-gbm]
xorg-server-1.20.7-r0[so:libgbm.so.1]
kwin-5.18.1-r1[so:libgbm.so.1]
qt5-qtbase-x11-9999-r17[so:libgbm.so.1]
xdg-desktop-portal-kde-5.18.1-r1[so:libgbm.so.1]
mesa-git-egl-0_git20200202-r2[so:libgbm.so.1]
xorg-server-xwayland-1.20.7-r0[so:libgbm.so.1]
mesa-git-glapi-0_git20200202-r2:
breaks: mesa-dev-19.3.4-r1[mesa-glapi=19.3.4-r1]
satisfies: mesa-git-dri-gallium-0_git20200202-r2[mesa-git-glapi]
mesa-git-dri-gallium-0_git20200202-r2[so:libglapi.so.0]
mesa-git-gl-0_git20200202-r2[so:libglapi.so.0]
mesa-git-gles-0_git20200202-r2[so:libglapi.so.0]
mesa-git-egl-0_git20200202-r2[so:libglapi.so.0]
mesa-git-osmesa-0_git20200202-r2[so:libglapi.so.0]
mesa-git-egl-0_git20200202-r2:
breaks: mesa-dev-19.3.4-r1[mesa-egl=19.3.4-r1]
satisfies: mesa-git-dri-gallium-0_git20200202-r2[mesa-git-egl]
gst-plugins-base-1.16.2-r2[so:libEGL.so.1]
qt5-qtwayland-5.12.5-r3[so:libEGL.so.1]
qt5-qtbase-x11-9999-r17[so:libEGL.so.1]
plasma-framework-5.67.0-r1[so:libEGL.so.1]
kwayland-5.67.0-r1[so:libEGL.so.1]
mesa-git-gl-0_git20200202-r2:
breaks: mesa-dev-19.3.4-r1[mesa-gl=19.3.4-r1]
satisfies: mesa-git-dri-gallium-0_git20200202-r2[mesa-git-gl]
charging-sdl-0.1-r1[mesa-gl]
osk-sdl-0.54-r0[mesa-gl]
gst-plugins-base-1.16.2-r2[so:libGL.so.1]
v4l-utils-1.18.0-r0[so:libGL.so.1]
xorg-server-1.20.7-r0[so:libGL.so.1]
qt5-qtwayland-5.12.5-r3[so:libGL.so.1]
qt5-qtmultimedia-5.12.5-r2[so:libGL.so.1]
qt5-qtwebkit-5.9.1-r9[so:libGL.so.1]
plasma-framework-5.67.0-r1[so:libGL.so.1]
xorg-server-xwayland-1.20.7-r0[so:libGL.so.1]
mesa-git-gles-0_git20200202-r2:
breaks: mesa-dev-19.3.4-r1[mesa-gles=19.3.4-r1]
satisfies: mesa-git-dri-gallium-0_git20200202-r2[mesa-git-gles]
qt5-qtbase-x11-9999-r17[so:libGLESv2.so.2]
mesa-git-osmesa-0_git20200202-r2:
breaks: mesa-dev-19.3.4-r1[mesa-osmesa=19.3.4-r1]
mesa-git-xatracker-0_git20200202-r2:
breaks: mesa-dev-19.3.4-r1[mesa-xatracker=19.3.4-r1]As per the alpinelinux dev's request. I have reported the issue on pmos issue tracker: https://gitlab.com/postmarketOS/pmaports/issues/454
RE: Error importing PyQt5 - PureTryOut - 02-23-2020
Ah yeah the mesa-git mess is a pmOS specific bug, py3-qt5 not working in the first place is an Alpine Linux one.
RE: Error importing PyQt5 - bunburya - 02-23-2020
Thanks both! It's good to know that at least it's reproducible, and thanks anjanmomi for filing the issue.
RE: Error importing PyQt5 - PureTryOut - 02-25-2020
Btw the original issue of this thread is now resolved. Just upgrade your system!
Code:
apk update
apk upgrade --available(note the "--available" switch)