ChimeraX Developer Meeting

Attendance: Zach, Tom, Eric

November 3, 2025

Agenda

• Qt updates to fix Mac crashes in Qt 6.9.2.
  • Crash in swap_buffers #19178
  • Crash in NSAccessibility #19187
  • OpenGL error after wake from sleep #19185
  • Crash in NSAutoreleasePool #19180
  • Tabbed tools don't show tabs often #19078
• ChimeraX 1.11 release schedule
• 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

• TOML bundle builder error reports
  • Looked at how to reduce the cascade of tracebacks that result when a bundle install fails #19262.
  • Zach will fix it to try to only show the first error.

• Ambertools bug fix
  • Greg's ambertools bug fix on plato did not make it into nightly builds because github cache needs clearing because same filename used for new version.
  • Zach has removed it from github cache.
  • Happens rarely since plato binaries that chimerax build uses are usually not altered with same file name, usually new file name for new version used.

• 1.11 tickets
  • Zach will remilestone his 1.11 tickets that will not be fixed in 1.11.
  • Greg was not at meeting so we don't know which of his 1.11 tickets need fixing. Will review on Thursday.

• Stacked tools missing tabs
  • The Qt 6.9 bug where stacked ChimeraX tools sometimes do not show tabs is also present in Qt 6.10.
  • Tom tested. Also tried Qt 6.8.2 with current daily build and does not exhibit this bug.
  • Also tried removing our floating tool Qt code and that did not change the bug.

• Release candidates
  • Still plan on having ChimeraX 1.11 release candidates start next week.

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Action Items