ChimeraX Developer Meeting

Attendance: Eric, Tom, Greg

February 23, 2026

Agenda

• PySide, any new bugs?
• Toolshed update caching to reduce database load.
• Web site accessibility progress.
• Decide on numpy, Python updates for 1.12 (3.13 or 3.14?)
• Chimera not working with macOS 26, graphics pane positioned over command-line.
• Work in progress reports
• Inside ribbon color?
• Make Chimera end-of-life bug report and registration changes.

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Discussion

• PySide6 bugs
  • PySide6 6.10.2 broke mac startup. Reverting to 6.10.1 today.
  • Get file dialog does not have "directory" key word. Need to modify Qt shim to handle PyQt and PySide keywords.
  • A few other possible PySide issues.

• Toolshed caching
  • Greg finds almost all MariaDB queries are for Toolshed updates (200k in log).
  • Caching is being used for update queries.
  • Cache should recompute when new bundle added.
  • Tom will probably approve a new bundle (cubeNtube) today and notify Greg to verify that cache updates as expected.

• Web accessibility
  • Score still at 97.2%.

• Python 3 generic C API
  • Greg will look at whether all ChimeraX code complies with generic Python 3 C API.

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Action Items