Qt for Python Development Notes

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2023

16. March 2023

  • General
    • Preparing submissions for Europython
    • New company colors
  • Infra & Releases
    • 6.4.3 release next week (no release branch)
    • Issues with Nuitka 1.5.1 (released yesterday) and the CI didn't like it. Pining 1.5
  • Bugs & Features
    • qtpip: add support for many other operators (for versions)
    • PYSIDE-2254 exit crash issue was fixed
    • PYSIDE-2251 designer issue when not initializing virtual environment.
    • qmlsurface example ported (polishing the C++ code as well)
    • example icons: discussions to standardize them a bit
    • android research: fixing some issues with qtquick
    • PYSIDE-1564 multiple inheritance work continues, really far but found new issues. Generalizing the solution a bit from a Shiboken point of view. Research on how shiboken handle multiple inheritance to be compatible with Python's way.
    • PYSIDE-2255 virtual method issue related to access to those members.
    • Generalization of QApplication usage on the tests.
    • Research: Add course to QtLearn related to Qt for Python
    • doc: some links are broken.
    • doc: migration to sphinx-design from sphinx-panels

9. March 2023

  • General
  • Infra & Releases
    • Preparing 5.15.13: release might be today if nothing goes wrong.
    • Wheel bundles on the account.qt.io, and soon to be available in the Maintenance Tool
  • Bugs & Features

2. March 2023

  • General
    • Preparing internal/external material
    • Next monday CI maintenance break
  • Infra & Releases
    • commercial wheel bundles available on account.qt.io
    • 6.4.3 release was postponed
  • Bugs & Features
    • Improvements for qtpip
    • postEvent() memory leak still has an unknown origin
    • PYSIDE-2236 QMetaMethod.fromSignal added
    • PYSIDE-2237 be careful with using reserved words in examples/docs/...
    • PYSIDE-2239 opaquecontainers wrong dunder name
    • PYSIDE-2206 Examples revamping
      • Maybe we keep some examples around even if they are removed in Qt/C++
    • Android work continues! looking good with 6.5
    • PYSIDE-1564 Multiple inheritance story was improved, still in progress.

23. February 2023

  • General
    • Giving a talk at Python La Paz (on Saturday) - in Spanish
  • Infra & Releases
    • 6.4.3 ready to start the release process
    • Change to fix the windows signing is merged
  • Bugs & Features
    • 3.12 compatibility changes will reach 5.15, 6.2, and the future 6.5 LTS
    • PYSIDE-79 (caused by PYSIDE-68) refcounting issues addressed
    • Continue the 3.12 support because of some new issues found
    • PYSIDE-1564: Multiple inheritance support is still being worked (old ABC issues might be related)
    • Issues with documentation build (sphinx)
    • Research on a memory leak related to the asyncio example: it's not related to asyncio, but from the posting action (pyside, and not Qt, because a C++ example with no async doesn't have any leak)
    • PYSIDE-2234 adding QRunnableCreate
    • fixed 6.5 issues with cross compilation
    • Designer examples revamp
    • Works continues on qtpip (a pip wrapper to install commercial wheels)
    • PYSIDE-2232 NixOS issues was fixed (another was deferred)
    • Research on the std::span support
    • Unity compilation research continues
    • Bug cleanup, closing and fixing old ones.
    • OpenGL getProc issue is being worked on.
    • PYSIDE-2192 interactive matplotlib issue (hook)

16. February 2023

  • General
    • Development of a tool for commercial wheel installation started, and other general improvements.
    • Blog posts -> 6.5 release, and Android research.
    • Don't forget about Europython.
  • Infra & Releases
    • Branching dev to 6.5 when the Qt/C++ 6.5.0 RC is out (16 Mar '23)
      • Only fixes go to dev with Pick-to: 6.5 if necessary
      • new features remain in dev (for 6.6)
  • Bugs & Features
    • nogil research was positive, and most of our test work. It would require for us to modify the generator for each function/module.
      • mandelbrot example works and improves its performance around 3.5 times.
    • Python 3.12 will include an incompatibility due to the changes in the type generation
    • It will be possible to install pyside6 in conda environments starting from 6.4.3 and 6.5
    • commercial identifier on commercial wheels will be replaced to be compatible with distutils
    • asyncio research continues
    • Adapting the deploy tool to include compatibility with android (in progress)
    • research on ML-based tool to transform c++ <-> python
    • Getting started docs updated
    • qtdoc documentation content will be included in the docs
    • doc issues: some broken links and references
    • General slides to be updated


09. February 2023

  • General
  • Infra & Releases
    • LTS tags cannot be pushed to community repo (permissions), hopefully in this week.
    • Maintenance Tool updates soon
    • Binary signing still need a little change to be working
    • dev to use 6.5 starting today
  • Bugs & Features
    • Android research in progress, looking good :)
    • A solution was proposed to fix the usage of PySide6 in conda environments: still needs tweaks to work, mainly related to an internal qt.conf that's loaded at runtime.
    • PYSIDE-2222 custom widget plugin, load with uic crash
    • PYSIDE-2201 was fixed: introducing weak references into the SignalInstances.
    • PYSIDE-79 was possible to solve (from PYSIDE-68 solution). Still needs to some documentation to be written.
    • PYSIDE-2221 research on future compatibility with NoGIL Python https://github.com/colesbury/nogil https://peps.python.org/pep-0703/
    • https://github.com/blueloveTH/pocketpy also interesting

02. February 2023

  • General
    • Europython 2023 will be in Prague! 17-23 July
  • Infra & Release
    • Improving wheel creation in our CI (signing windows, and other things)
    • Soon we will have released LTS in the OSS repo (after some complications)
    • CI Maintenance break coming next Monday (keep an eye open to the Python configuration)
  • Bugs & Features
    • Unity builds were helping pyside/shiboken, and some tests are being done in qt/c++
    • meta task on revamping examples in the Qt Project
    • Adding uic functionality and documentation
    • Doc reviews, some issues were found
    • Android development continues, and looks good!
    • introducing --log-level to change --verbose-build and --quiet
    • Overhaul of Signal/SignalInstance continues:
    • create_wheels.py --builddir to explicitly provide build directory
    • WIP: QtAsyncIoEventLoop using Qt's event dispatcher, using BaseEventLoop and BaseSelectorEventLoop for guidance

26. January 2023

  • Infra & Releases
    • Fixed issues with Windows signing
  • Bugs & Features
    • Fixed PYSIDE-2204 qt.conf encoding
    • Fixed bugs in pyside6-metaobjectdump (QML) PYSIDE-2202 , PYSIDE-2203
    • PYSIDE-2194: Possibly requires refactoring of QLowEnergyController to use the new WinRT API, instead of COM API
    • Android Deployment - Patches incoming to automate cross compilation to produce android wheels
    • Overhaul of Signal/SignalInstance
      • Implement Weak Reference Handling
      • PYSIDE-2201 Handle early destruction of the object better
      • PYSIDE-79 Trying to finally fix the reference leak using weakref.
    • Alternative approach to Anaconda issue: Register internal qt6.conf with site-packages prefix (still WIP).
    • WIP: Implement class QtAsyncIoEventLoop(asyncio.AbstractEventLoop) that wraps around Qt's event loop to enable Qt + asyncio.
    • Memory leak with current asyncio example (or space leak?)

19. January 2023

  • General
    • Hackathon in TQtC
    • The WebAssembly PySide Team was almost doubled in size (+1 brain, +1 hand)
  • Infra & Releases
    • Windows signing to be improved.
    • LTS releases into oss repo: some issues appeared but will be merged soon.
  • Bugs & Features
    • PYSIDE-1994: De-virtualization of Shiboken embedded Python files is now an option controlled dynamically by SBK_EMBED
      • PYSIDE-1019: A dormant __feature__ initialization timing problem was fixed while implementing de-virtualization
    • PYSIDE-1735: De-coupling of old and new enums was started
    • PYSIDE-1564: Debugging of multiple inheritance continues
    • Fixed some bluetooth functions in PySide6.
    • Low Energy Scanner Example
    • PYSIDE-2194: Progressing with this. Definitely a thread issue which allow-thread doesn't seem to fix.
    • Possible solution for problems with PySide6 inside conda (compat package with qt6.conf file), but investigating if best solution

12. January 2023

  • General
    • Next week is Hackathon, meeting will be shorter
    • Discussion on how to gather information, and sharing material around Qt for Python
  • Infra & Releases
    • 6.5 RC planning -> feature freeze for PySide
    • 6.4.2 was released last Monday
    • CMake Jumbo builds issue with Windows signing
    • LTS branches to land in pyside-setup soon
  • Bugs & Features
    • Async examples: addressing memory leak and cpu usage due to the event loop interactions
    • Review conda packaging story and PySide6
    • De-virtualization of Python files: still some issues
    • Incompatibility with pywin32: __feature__ related when trying to check if the ext module uses PySide. Also related to an issue with the inspect module.
    • Installing PySide6.support via CMake (was previously not considered)
    • Work continues on the multiple inheritance issues related to classes based on QObject
    • locate issues related to to* methods
    • std::array support in shiboken (still in progress)
    • fixing imports in matplotlib examples
    • adaptation to 6.5
    • splitting shiboken generator source to its own
    • Android deployment works - tested on Widget applications
    • Fixing QTBUG-109510 leading to discovering issues with certain functions in PySide6. Being fixed.

5. January 2023

  • General
    • Next monday CI maintenance
    • OKRs
  • Infra & Releases
    • 5.15.12 LTS, 6.2.7 LTS released
    • Open Source LTS releases to be moved to the pyside-setup
    • 6.4 CI hanging, issues on lts-5.15 due to Python
    • 6.4.2 to be release in the following days
  • Bugs & Features
    • PYSIDE-1931 SQL issue regarding allow-thread
    • helping 6.5 translations
    • Adaptations with 6.5
    • QSharedPointer -> std::shared_ptr attempt
    • research on adding std::span into shiboken
    • PYSIDE-2160 properties qml types issues
    • Tutorials language review
    • Android research continues
    • QTBUG-109510 BTLE issue on pyside

2022

2021

2020

2019

2018

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