ChimeraX Developer Meeting

Attendance: Zach, Eric, Tom, Greg

March 2, 2026

Agenda

• PySide, any new bugs?
• Toolshed update caching to reduce database load.
• 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

• PySide issues
  • We reverted from PySide 6.10.2 to 6.10.1 because of an OpenGL error at startup.
  • Might be able to make a Qt bug report with a simple test program that demonstrates this problem.
  • Discussed why expose event on status line is the route of all these OpenGL errors. Why not in the main graphics or side view (do they get expose events?).

• Toolshed high CPU load
  • Caching of database queries for toolshed updates seems to be working.
  • Greg believe current CPU load is from in Trac, not database queries.
  • Greg says consumers of web data (bots, AI) are often not caching which leads to high load on open source sites.

• Web accessibility
  • UCSF sent email saying 301 videos and 29 PDFs need fixing.
  • Greg asked last Wednesday for a list of the videos and PDFs. Has not got a response.
  • Greg says ADA requirements for web accessibility allow unremediated "archival" material. Must me certain requirements. Greg things our videos and PDFs probably meet requirements.

• Elaine retirement
  • Who will take over Elaine's essential duties?
  • Eric suggests we hire a replacement.
  • Eric suggests Claude may be usable for writing first draft ChimeraX documentation consistent with documentation current style.
  • For licenses, Elaine primarily issues license keys.

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Action Items