Qt for Python Development Notes

2024

23. May 2024

• General
• Infra & Releases
• Bugs & Features

16. May 2024

• General
• Infra & Releases
  • 5.15.17 commercial lts needs to be re-packaged one more time due to 3rd party components updates.
  • 6.7.1 release will also be re-packed. LE for release is 20th of May
• Bugs & Features
  • PYSIDE-2753 - Added missing libQt6DeclarativeOpcUa binary to wheels
  • PYSIDE-2750 - Added missing libQt6VirtualKeyboardSettings binary to wheels
  • Exclude .qsb, .webp, .cpp.o and .qen from deployment due to Nuitka error. Error report raised in Nuitka - https://github.com/Nuitka/Nuitka/issues/2854
  • Working on macOS cross compilation. The clang parser of shiboken generator needs some changes for cross compilation. Tricky changes incoming.
  • PYSIDE-2748 - Fixed a type hint error
  • PYSIDE-2747 - Diagnostics and minor fixes for a crash on Fedora, no real fix though
  • PYSIDE-2711 - Fixed a bug in QWidget/QObject.parent()
  • Work on type discovery in libshiboken, added helpers to dump internal state, performance considerations
  • PYSIDE-2620 - Adapting to 6.8
  • PYSIDE-2745 - Fixed a bug with exceptions in 0-delay singleShot timer slots

2. May 2024

• General
  • OKR reviews for the next quarter.
  • Got a long document with feedback of a few tools we provided, that will help us improving our tooling!
  • Started the planning of moving away from '<file>.pyproject' to 'pyproject.toml' for pyside projects, in order to add options for our tools.
• Infra & Releases
  • 5.15.17 commercial lts needs to be re-packaged due to 3rd party components updates.
  • 6.7.1 to be released next week.
  • Add new mechanism to test snapshot wheels.
• Bugs & Features
  • PYSIDE-2698 - ListProperty features fixed. Added tests to check all the features.
  • PYSIDE-2705 - issues with signal disconnect warnings fixed
  • macOS cross compilation for Android - stuck on a CMake issue. Progressing well.
  • PYSIDE-2709 - Analysis ongoing for this QML registration regression
  • Work on improving/documenting type discovery in shiboken
  • Enumeration support in QtScrypt
  • PYSIDE-2676 - PEP 697 extension in Python 3.12 fixed
  • BT bug research, cannot be reproduced and application doesn't hang. Connection is not successful.
    • Issue might require special hw
  • Documenting QtAsyncio implementation details.
    • An internal presentation is being prepared.
  • Possible QtAsyncio feature, 'run' supporting context managers.
  • macOS cross compilation for android being tried

25. April 2024

• General
  • Successful talk at PyCon DE. Good response.
• Infra & Releases
  • Preparing 6.7.1
  • 5.15.17 Commercial LTS is also soon to be prepared
  • sccache seems to be not properly behaving (on windows) because we are not getting enough output.
  • PySide6_DS wheel to be adjusted and hopefully be released soon.
• Bugs & Features
  • Added a number of new classes
  • PYSIDE-2676 issues on ubuntu (might be related to a windows issue as well)
  • Implementation of Lazy Groups in order to avoid the regression in 6.7.0 due to multiple inheritance.
  • Alternative for Lazy Groups (Fix for the regression on 6.7.0)
    • Work on regressions introduced by lazy initialization PYSIDE-2675
  • Work on a crash in Python 3.12 PYSIDE-2676
  • Fixed memory leaks PYSIDE-1617
  • Work on our QML list property support PYSIDE-2698
  • Added pyside6-balsamui (ui tool for pyside6-balsam) - PYSIDE-2629
  • Also checking out List Property error with `count` and `at` parameters - PYSIDE-2698
  • Updating old example (calqlatr) - https://codereview.qt-project.org/c/pyside/pyside-setup/+/523055 for responsive layout
  • QtAsyncio: refinements to the current implementation, and solved a bug report.
    • Trying to add support to Keyboard interruptions (handlers)
    • Plan to improve exceptions handling

18. April 2024

• General
  • Bug fixing week
  • PyConDE (Mon-Wed next week)
  • Planning a workshop for TQtC solution engineers (internal)
  • Possibility to include shiboken into the Axivion infra
• Infra & Releases
  • 5.15.17 commercial LTS was postponed to Friday. Still need test on Windows.
  • 6.5.6 release planned
  • 6.7.1 release has been postponed to the first week of May
  • DS-compatibility wheel postponed due to CI issues
  • We might need to create a testing platform in order to check other errors that are not detectable with simple tests.
• Bugs & Features
  • Few new type hints issues from 6.7.0 release, needs to be address on 6.7.1
  • QtAsyncio issue related to Task groups. Tricky, because it can be related to Qt Events.
  • PYSIDE-2629 Adding more Qt-tools to the wheels
  • PYSIDE-2622 Adding a new option to the deploy tool (exposing an option from Nuitka)
  • PYSIDE-2675 Lazy loading issues with trees of polymorphic classes.
    • first approach made things less effective
    • The impact of the solution was reduced a bit, by disabling the feature for special multiple-inheritance cases
    • New idea on 'groups' that be handled differently, so we have group or classes grouped and dependant
  • 825 qml bug is still around
    • PYSIDE-2676 seems to be a new approach to fix it
  • A few customer bugs made it the bug fixing week.
  • PYSIDE-2675 type discovery code, class inheritance
  • QtAudio -> QAudio refactory
  • Virtual function compatibility to modify the signature (from typesystem)
  • PYSIDE-2492 uic issues for Enum compatibility
    • More improvements for Python projects (import options)
  • PYSIDE-2685 nan type definition
  • Removing code from shiboken
  • 6.8 Adaption already started
  • PYSIDE-2689 sphinx directives doesn't seems to be compatible with the search context.

11. April 2024

• General
  • Bug fixing week.
  • Qt 6.6.3 Library split broke our release, so we provided 6.6.3.1 as a fix.
  • Qt 6.7.0 also had an issue with a binary incompatibility change on QtAudio and QAudio
  • Maybe we implement a simple channel of communicating this details, in order to avoid breakage [maybe architect meetings]
  • Qt Creator 13 creates venvs automatically. This needs to be revisited to avoid multiple environments to be created.
  • New epics with brainstorming ideas.
• Infra & Releases
  • 6.7.0 was released, we found a couple of issues we are trying to solve, and 6.7.1 will soon be released due to a binary compatibility break, and other small breakage.
  • 5.15.17 commercial LTS to be release next week.
  • QtDS packages a bit delay due to CI errors.
  • Qt Installer (Maintenance tool) has still some issues with the structure.
• Bugs & Features
  • Adding new Qt tools to the wheels (wrappers)
  • PYSIDE-2602 special virtual function research
  • PYSIDE-2669 designer issue
  • PYSIDE-2675 Addressing the lazy import issues that were found in 6.7.0
    • Studying the possible solution, but it needs to consider other cases as well.
    • the *-import handling seems to be related, and affecting the mro content, duplicating some entries.
    • the type discovery handler might be related as well
  • Still working on the qml 825 bug issues.

4. April 2024

• General
  • Large part of the team at conferences/on Easter holiday
• Infra & Releases
  • Released 6.6.3.1 release with fixes for Quick Controls/Multimedia
  • Preparing for 6.7.0
• Bugs & Features
  • PYSIDE-2646 Improved cleanup of signal manager objects
  • PYSIDE-2662 Fix for a signal in OpcUA
  • PYSIDE-2663 Fixed a crash in webengine bindings
  • PYSIDE-2668 Fixed an error in enums

28. March 2024

• General
• Infra & Releases
  • Prepared 6.6.3.1 release; 6.6.3 was unfortunately broken due to missing libraries (Quick Controls/Multimedia)
• Bugs & Features
  • PYSIDE-2654 Fixed multiple inheritance when no __init__ is in a subclass
  • Still investigating a crash on Ubuntu with Python 3.12 and bug_825.py . The crash is deeply hiding in Qt6.
  • PYSIDE-2652 Fixed an int overflow
  • PYSIDE-2649 Work on building without OpenGL
  • PYSIDE-2653 Fixed a syntax error in type hints

21. March 2024

• General
  • Ideas to improve the module.
  • Most of the team is going on vacation the following weeks.
• Infra & Releases
  • 6.7.0 to be released the first week of April [delayed]
  • 6.2.12 Commercial LTS to be release in the following days [delayed]
  • 6.6.3 to be release next week [delayed]
• Bugs & Features
  • 6.8 adaption patches are being worked
  • PYSIDE-2638 fix crash QLayout when None is passed
  • Documentation updates: for tooling and examples.
  • QtRhi missing API provided
  • Memory leak regression being worked out
  • Shiboken Qt namespaces patches being cherry picked to previous versions.
  • Android deployment and qml tool documentations
  • Android wheels generation on the CI process is being improved.
  • Debugging deep into Nuitka to understand a problem with the lazy loading functionality.
  • QAsyncio bug fixed
  • Adding more tools docs pages for our tools.

14. March 2024

• General
  • PyConDE schedule is out, don't miss Shyam's talk https://pretalx.com/pyconde-pydata-2024/talk/W7YDRX/
  • Python 3.13.0a5 is out.
• Infra & Releases
  • 6.7.0 in preparation, docs adjustments and new pages will come. Branching on Monday.
  • 6.2.12 LTS release in preparation.
  • 6.6.3 will be release next week.
  • qtpip 0.1.1 to be released
  • dev is already Python 3.8 free, and we support 3.9+ for 6.7+
• Bugs & Features
  • Triaging and fixing issues in general: 2638 layout crash.
  • PYSIDE-2690 namespaces support continues
  • Lazy initialization got merged
    • New improvements might land in future versions
  • PYSIDE-2635 OpcUA example problem
  • PYSIDE-2633 remoteobjects issue
  • Using new icons on the examples
  • Testing libclang 18
  • QObject.connect bug when a callable is a QObject (workaround with manual overload)
  • QIOPipe implementation for QAsyncio (base in the Qt/C++ one)
  • New use cases for QAsyncio and aiohttp
  • permission API changes got merge
  • android wheel compilation was adapted for qt 6.7.0 (PR on python-for-android was merged)
  • PYSIDE-1639 QLocale issue was fixed

07. March 2024

• General
  • Participation in FOSS Backstage
• Infra & Releases
  • 6.5.5 Commercial LTS was released
  • 5.15.13 OSS Package will be released tomorrow
  • qtpip 0.1.1 release delayed
  • Python 3.8 deprecation is still pending due to CI configuration dependencies.
• Bugs & Features
  • permission api changes are mostly merged, one pending https://codereview.qt-project.org/c/pyside/pyside-setup/+/536759/15
  • all deployment fixes are in.
  • lazy initialization work continues, and some issues were fixed already.
    • Ubuntu 22.04 | Python 3.10.2 |is showing an issue with scriptableapplication
  • Continue implementing more API for QtAsyncio which is currently working well
  • two pending change for 6.7.0 and 6.6.3 to be merged.
  • PYSIDE-2590 qt namespaces support required a patch for Qt/C++
  • PYSIDE-2619 gentoo issue with a build
  • PYSIDE-2624 typing issue with '/' is being researched
  • Qt Icon Teams issues were discovered
  • PYSIDE-2602 virtual function research on a special signature
  • One regression related to the QObject.connect changes.

29. February 2024

• General
  • Leap day!
  • Documentation changes
• Infra & Releases
  • 6.7.0 will drop support of Python 3.8
  • 6.5.5 to be released in the following days
  • 6.7.0 RC marks our feature freeze, some exceptions will be discussed in order to release on time.
  • qtpip 0.1.1 to be released soon for new indexing and shiboken_wizard package
  • General update of Python versions in our CI configuration is being planned (for dev-6.7)
• Bugs & Features
  • PYSIDE-2599 QMatrix3x3 issues with QVariant
  • PYSIDE-2605 Embedding an application, using .style() - qAPP
  • PYSIDE-2590 QT_NAMESPACES support
  • PYSIDE-2602 clash on signature for QtWebEngine returning tuple
  • Preparing 6.5.5 and 6.7.0 releases.
  • PYSIDE-2612 CMake issue from Anaconda builds when find_package
  • macOS permissions changes are almost all merged
  • Windows BTLE services crash
  • QIO-class are required for some new QAsyncio API using pipes
  • Lazy loading moving forward, but still a few issues are around
    • A couple of shiboken tests seems to have outdated imports that are not helping.
    • shiboken compatibility types missing
  • Typing issues being solved in order to improve the pyi quality

22. February 2024

• General
  • Brainstorming discussion about new JIRA items.
• Infra & Releases
  • 6.6.2 was released!
  • qtpip getting a new minor version in order to be able to install new shiboken wizard
• Bugs & Features
  • Permission API issue failing on the release framework. QtLocation problems were addressed.
  • QtAsyncio blog post was published.
  • Definition of done for QtAsyncio story, some functions will be implemented, but other ones (until reaching the whole set of user facing API) will be implemented in the future.
  • Lazy initialization of numpy support in PySide, to improve the general lazy loading effort.
  • Starting documenting pyside6-* tools
  • PYSIDE-2610 Qt3D issues
  • 6.7 adaption was a lot of work, namespaces were something tricky.
  • 6.7 changelog drafted.
  • Started to improve the type hinting issues.

15. February 2024

• General
  • Brainstorming session was held.
  • Europython Call for Proposal is open!
• Infra & Releases
  • 6.6.2 release waiting for Qt/C++ packages to be done.
  • Commercial 6.5.5 LTS to be out next week.
  • Some improvements to the CI and macOS behavior
  • Cherry pick bot on commercial repositories.
• Bugs & Features
  • singleShot changes are merged, keep an eye on strange behavior.
  • 6.7 adaption: metaobjectdump improvements
  • 6.6.2 fixes with the commercial shibokenwizard
  • lupdate support for pyside improved (qm files)
  • pyside6-project problems with dry-run were fixed. Some improvements planned.
  • CI android wheels upgrade [skip armv7 in the meantime]
  • Lazy imports research continues, we see lots of improvements on apple M* devices.

8. February 2024

• General
  • We got a PyConDE 2024 talk accepted (python -> android deployment)!
• Infra & Releases
  • Addressing some issues with the android wheels
  • 6.6.2 got delayed until next week
  • Preparing for the 6.7 switch on dev
• Bugs & Features
  • macOS: permission api patches ready for review
  • singleShot patches merged
  • Lazy initialization was finished, and ready for discussion.
  • Check compatibility with the new REST module (from Qt/C++)
  • Preparations for 6.7 continues.

1. February 2024

• General
  • Interest from KDE to enable flatpak packages (maybe base pyside app).
  • Discussion on adding more tutorials of specific functionality.
  • CI Maintenance Break next Monday (first Monday of each month)
• Infra & Releases
  • no unity build discussion and checks
  • 6.6.2 to be released next week.
  • More granularity on the commercial wheels: shiboken wizard wheel.
• Bugs & Features
  • singleShot timer implementation (to use underlying c++ impl) - still an issue with a context object, and a signal as a functor. A new QObject::connect might handle the situation. More changes to come in order to fix newly discovered issues.
  • Android: using the master branch on python-for-android, and other changes related for macOS deployment.
  • PYSIDE-2597 optimization for the deployment procedure
  • Lazy initialization: works continues, and it's looking good. 13 bugs to go on lazy mode. The new implementation seems to be working better.
  • 6.7 adaptation still in progress (many changes from Qt)
  • General documentation adjustments
  • Improvements on shiboken: better error messages
  • Qt Namespaces compatibility attempts.
  • Moving away from a couple of setup.py options towards pyproject.toml after upgrading 'build' to 1.0.x
  • Design Studio compatibility wheel work continues

25. January 2024

• General
  • Configuring additional embedded devices for RTA
  • Focus on spending some time on embedded linux, in order to see usability, and compatibility with Boot2Qt images.
  • Conferences: submissions to PyCon SK, PyCon DE, PyCon LT, PyCon US
• Infra & Releases
  • Decouple of the commercial wheels in order to have a finer granularity and simpler tree on the Qt Installer (Maintenance Tool)
  • Qt for Python 6.6.2 is waiting for Qt to be released (by the end of the month)
  • The next 5.15.13 LTS open source release will include a new fix for a missing symbol (PyIndex_Check)
  • New CI configuration without '--unity' for manual testing, to spot issues.
• Bugs & Features
  • VS Code will use .flake8 (formerly setup.cfg) file for configuration once merged
  • PYSIDE-2575: Added a new argument to QtAsyncio to configure whether the QCoreApplication at the core of QtAsyncio should be shut down when asyncio finishes (requested by user).
  • SingleShot timer issue: Slight "complexity explosion" because correct implementation for one case requires implementation of QObject.connect overload with context arguments (and we implement QObject.connect ourselves, see PySide::qobjectConnectCallback).
  • Scripting: code simplification, and massage it to a Qt module.
  • Documentation updates to fix issues we had.
  • Unity build some issues when building without.
  • 6.7 updates, adapting some warning messages
  • QTBUG-99313 related issues
  • macOS permissions: made an example to work (for deployed apps) - patches incoming
  • Android wheels provisioning and configuration in order to generate the base-wheels.
  • armv7 complications due to an upstream find_python command.
  • Lazy initialization: re-wrote approach from scratch, to reduce the patches to one that can be analyzed easily. Some complications with this approach that needs to be improve. It can be tried with https://codereview.qt-project.org/c/pyside/pyside-setup/+/496118
    • https://peps.python.org/pep-0690/ was rejected, but the idea can be implemented per-module
  • Moving entry_points declaration to pyproject.toml from setup.py
  • Drop the bdist_wheel steps from the CI (old wheels)
  • Started working on split commercial wheels, wheels for QtDS and examples on QtCreator.

18. January 2024

• General
• Infra & Releases
  • Commercial LTS 6.2.11 was released
  • Add missing tags OSS LTS 5.15.x
  • 6.6.2 scheduled by the end of the month
  • Release documentation to be written to have tasks on JIRA
• Bugs & Features
  • Python Scripting: looking into stable API, and cleanup
  • PYSIDE-2577 doxygen issue
  • PYSIDE-2570 closing some roadmap items
  • Polishing documentation to use more sphinx directives
  • Qt 6.7 adaption
  • Addressing some flake8 issues in the build_script
  • macOS permission API work continues: limitation for interpreted script, only compatible when deployed. Working around nuitka.
  • singleShot: trying to solve a corner case when no sender is specified (for using the C++ function directly)
  • Fixing some CI problems with 3.11 -> 3.12 changes.
  • PYSIDE-2404 adding more information regarding the lazy evaluation, new approach might work.
  • pyside6 is now an official recipe on the python-for-android!
  • Improvements to the doc build process

11. January 2024

• General
  • Hackathon at TQtC
  • CI process presentation
• Infra & Releases
  • Commercial LTS 6.5.4 release starting (to be finished today)
  • Commercial LTS 6.2.11 still pending release
  • 6.6.2 schedule by the end of the month.
  • CI still showing some issues after the maintenance break.
  • Update of the Python versions are pending.
• Bugs & Features
  • Fixing a few small issues with QtAsyncio
  • Documentation for the QtAsyncio is currently in review.
  • New behavior for singleShot (relying on the C++ impl)
  • macOS request permission API work continues.
  • 6.7 adaptions patches
  • M2M fixes on the current impl
  • Native interfaces were added (new ones) to public headers
  • favicon issue with out docs
  • Making our doc diagram generation optional
  • Improvements for the doc build process

04.January 2024

• General
  • Happy new year fellow readers :D
  • New OKR organization
  • Keeping in an eye on Conferences
  • PyPy is now on 3.10
  • Ideas on the wheel organization for the Qt Installer
• Infra & Releases
  • CI Maintenance break continues. Some new issues were discovered.
  • Pending releases: 6.2.11 and 6.5.4
  • Android wheels for testing purposes are available (not for production)
  • Xcode issues with a new M3
  • Planning the inclusion of Python 3.12 in the CI
• Bugs & Features
  • async: A few bug fixes were pushed and ready for review
  • async: the module is missing from our docs
  • async: we have been getting some interests from users, so new issues are appearing.
  • new android tag added to the examples for a better browsing
  • pyside6 designer pyenv crash was fixed
  • pyside cmake module update crash was fixed
  • working on the request permission API for macOS
  • docs: free functions as separate section and other improvements
  • Python scripting in c++ works continues
  • PyPy 3.10 compatibility patches
  • nogil: working again on a compatibility with PEP703
    • locking mechanism for our modules.
  • Typing adjustments, we need '/' in our signatures due to not having keywords parameters.

2023

• Qt for Python Development Notes 2023

2022

• Qt for Python Development Notes 2022

2021

• Qt for Python Development Notes 2021

2020

• Qt for Python Development Notes 2020

2019

• Qt for Python Development Notes 2019

2018

• Qt for Python Development Notes 2018