= ChimeraX Developer Meeting =

Attendance: Greg, Zach, Tom, Eric

August 25, 2025

= Agenda =

* Include !PySide fixes in develop branch for easier testing.
* Can we use Cytoscape GPU nodes for structure prediction?
* Updating prereqs.
* Switch from !PyQt to !PySide?
* ViewDockX port to Qt
* Inside ribbon color?
* Work in progress reports
* Make Chimera end-of-life bug report and registration changes.
* Back up the Chimera build machine to a solid state drive, Windows 7.
* Linux ARM64 release and download page

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= Discussion =

* Windows ARM installation
 - Windows installer  used to allow installing Intel ChimeraX on ARM to run under emulation.
 - That ability was missing in 1.10 release from change to Github Action builds.
 - Zach has added installing on Windows ARM in daily build.
 - Appears not many Windows ARM users since ChimeraX 1.10 has been out a couple months and we just heard about the installer problem today.

* !PySide easier testing
 - Zach says he commits !PySide fixes to both the develop and pyside branches of ChimeraX.
 - So we can easily try !PySide with the develop branch when we are testing whatever we are currently working on.
 - There is a USE_PYSIDE (?) environment variable when building to get !PySide instead of !PyQt.
 - Alternatively !PyQt can be pip uninstalled (also !PyQt-WebEngine) and !PySide pip installed.

* Cytoscape GPU nodes
 - Greg, Tom Ferrin and Tom Goddard looked at two GPU nodes (8 L40S GPUs) in BH-101, not currently powered.
 - Still need to find a location (N453?) with adequate power and cooling to run them.
 - Also need to see what purpose Scooter wants to put these nodes to.

* Wynton news
 - Greg says a plan for moving Wynton to CoLab off-site facility will be produced by academic research computing (Mandy) by end of September for Sam Hagwood to review.

* ViewDock
 - Eric gave improved viewdock back to Shoichet lab tester Andriy.
 - Soon will remove ViewDockX bundle.

* numpy 2
 - Discussed updating numpy 1 to numpy 2.
 - Will be needed for Python 3.13 because numpy 1 binaries are not available for 3.13.
 - Decided to wait until Spring ChimeraX release.  Work on one major change, PyQt to PySide for this December release.

* Prereq updates
 - Eric unpinned prereqs to see if new ones work, then will pin new latest versions.
 - Greg has updated some prereqs.  Newer Cython since update is available.
 - Tom has not made updates yet.
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= Action Items =