Meeting: Wednesday, September 30, 2026 · 12:00–1:00 PM ET

Facilitator: Kelly Chan / Saleem Abdulrasool

Audience: BCNY, Apple engineers, external community (open to all)

Forum: Swift Forums — Windows

Last call notes: Windows Workgroup — September 16, 2026

1. Welcome & Agenda (~3 min)

• Confirm meeting goals

2. Open Forum: Community Issues (~8 min)

• New Windows-category topics, questions, and blockers
• WindowsKit update from Ethan, if available

3. Follow-Up: Open Action Items from September 16 (~18 min)

• Snapshots & Code signing — Alastair
  • Main snapshot updated last week 9/21 https://www.swift.org/install/windows/
  • Follow up with Mishal on a signing/repackaging path
• LibXML2 / WASI #91263 — Alastair
  • Status of a discussion on the missing dup syscall and options for the dependency
  • New patch release of libxml2 is out as well (need to check, but unlikely to impact this)
• Foundation static linking #5525 / #91520 — owner TBD
  • Progress on duplicate symbol definitions / ODR annotation investigation
  • Saleem and Tony Parker to connect
• zlib for WASI #89960 — owner TBD
  • Identify an owner for the CMake work blocking the Windows WASI SDK
• Installer packaging — Saleem / Leonard
  • Progress separating packaging from build.ps1
  • Apple CDN URLs (action on Mishal) and installer smoke tests (open request to Justice on Jenkins argument)
• PCH / DLL builds — Fabrice
  • Status of the PCH configuration work and its non-DLL build-time tradeoff
• Experimental COM / SwiftWinMD — Saleem / Alastair
  • COM feature branch #91311 — patch/commit status and merge plan
  • COM interop vision — review feedback and response; clarify remaining design questions
  • Experimental COM builds — ARM64 and x64 coverage; feedback on the demo
  • SwiftWinMD — remaining metadata/transitive-closure work and API shaping
• Parallel toolchain detection — Saleem
  • Status of an issue for Swift Build failing when multiple toolchains are installed

4. Nightlies & CI (~10 min)