ChimeraX Developer Meeting

Attendance: Tom, Zach, Eric, Greg

June 29, 2026

Agenda

• Not compiling Python ourselves; use GitHub
  • Try as a tech preview
  • Still do Linux ourselves because of ssh
• ChimeraX 1.13 updates?
  • Python 3.14 (blocked by #20335 and #16848)
  • PySide 6.11.1
    • Try it again -- in a week (along with other package updates)
• Inside ribbon color?
• Toolshed reduce query result size.
• Chimera release?
• Work in progress reports
• Make Chimera end-of-life bug report and registration changes.

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Discussion

• Ssh security warning on Mac
  • Greg says Tom's Mac still has an ssh security warning.
  • Needs ssh 10.3 but has 10.2p1.
  • Mac is at macOS 26.5.1. Tom will update to 26.5.2.
  • Check other Macs to see if they have newer ssh.
  • Greg may file exemption if macOS does not offer a fix.

• Package updates
  • Eric update PyPi packages used by ChimeraX Python shell.
  • New window resize bug reported by Tristan in Qt 6.11.

• AI visualization
  • Tom Ferrin asked about AI visualization example from OMSF workshop.
  • TomG got slides for Open Molecular Software Foundation talk on AI visualization by Dion Whitehead.
  • Might be interesting to try to make a coupled sequence alignment and structure web view using these tools.

• Chimera 1.20 release
  • Greg made Mac and Windows Chimera 1.20 release with newer Tcl/Tk that fixes Mac graphics not being positioned correctly in window.
  • Linux Chimera 1.20 build failed not finding freetype2 headers. Greg is looking at it.

• Doing Elaine's tasks
  • Discussed how to write documentation, answer user email, quality control on new features, make feature highlights, document new citations, without Elaine.
  • Aim is to keep up Elaine's high standards.

• Roadmap for ChimeraX 1.13 release in December
  • Eric working on writing DMS surface files and making metal geometry tool.
  • Tom working on handling deletions and insertions in mutation data, and fetching mutation data from MaveDB.

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Action Items