# Slicer Meeting Notes Dec 16 2025 ## 2D transform read support (Dzenan) [PR 8842](https://github.com/Slicer/Slicer/pull/8842) is ready to be reviewed. The commits will be re-grouped into 2-3 commits to make this easier to review, and a timing test will be added: It is not clear whether transform reading performance will be impacted by some of the 2D vs 3D checks. It is worth testing whether the transform read time is impacted when trying to read a dense 3D displacement field. ## [Subject hierarchy node thing](https://discourse.slicer.org/t/slicer-5-10-qmrmlsubjecthierarchycombobox-turned-to-none-but-no-issue-with-5-8-1/45203) (Andras) - could be parameter node related - Sam will look into it ## Telemetry extension (Bernardo) - It is recommended to test against and target 5.10 since that is stable, and nightly is going to become less stable with Qt6 coming. - Next thing to do is for Bernie to open an issue on the [SlicerTelemetry repo](https://github.com/Slicer/SlicerTelemetry) describing all the details about how to set up a server. ## Containers (Ruffin) - waiting on Qt6 - can container spawn on distrobox? - those dev containers are configured in a way that does a lot of what distrobox automates ## ways to rebuild more quickly/incrementally (Ruffin) - The ccache tip [in the build docs](https://slicer.readthedocs.io/en/latest/developer_guide/build_instructions/linux.html#configure-and-generate-the-slicer-build-project-files) - Remaking from the superbuild level often does a lot of work for small changes, due to a not yet understood issue in the VTK cmake system. If you know exactly what changed and you only need to rebuild a certain library you can `cd` into it and make from there - Remaking from the inner build (`Slicer-build/`) is not too bad-- that is usually pretty fast and clean. ## superbuild cloning doesn't need history (Steve) Do we really need to `git clone` the entire project histories in our superbuild (for VTK, etc.)? We should consider adding `--depth 1` to our clone commands. Maybe there was a reason we haven't been doing that already -- it would be good to hear people's thoughts. ## Qt6 (all) - Sam still needs to get Qt6 on factories - need to start testing packaging - Andras tried packaging on windows and found that [Qt DLLs are not included in Windows package](https://github.com/Slicer/Slicer/issues/8916) ### PRs to review - [8903](https://github.com/Slicer/Slicer/pull/8903) - [8910](https://github.com/Slicer/Slicer/pull/8910) ### Issues - [8904](https://github.com/Slicer/Slicer/issues/8904) - [8905](https://github.com/Slicer/Slicer/issues/8905) - [8916](https://github.com/Slicer/Slicer/issues/8916) ## Discussion on correct logic/widget breakdown on SlicerNNUnet/SlicerDentalSegmentator (Mauro)