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ThePirateRay/docs/research/rayforge-windows-gui-preflight.md

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Rayforge Windows GUI preflight

  • Date: 2026-10-19
  • Scope: isolated no-device launch prerequisite check
  • Transport: none
  • Installation performed: no

Result

The pinned Rayforge source and the external no-device JCZ addon are present, but the current test environment cannot launch Rayforge's GTK application. The observed launch failure is:

ModuleNotFoundError: No module named 'gi'

Rayforge's Windows development path expects an MSYS2 UCRT64 installation, PyGObject, GTK4 and Libadwaita. Neither C:\msys64\msys2_shell.cmd nor the checkout's generated .msys2_env is present. The lightweight Python venv used for the transport-free encoder spikes therefore cannot substitute for the GUI runtime.

The deterministic preflight result is stored in tests/fixtures/rayforge-windows-gui-preflight.json. It deliberately reports the manual GUI checkpoint as blocked rather than treating source/model tests as a successful application launch.

Safety and scope

The attempted instance used an isolated configuration directory and contained only the external no-device addon. The addon has no discovery or transport implementation. No USB endpoint or controller command was reached.

No dependency or runtime was installed. Installing Rayforge's full Windows toolchain is a separate, reviewable action: upstream's setup includes MSYS2, GTK, compiler/build packages and network downloads, so it should not be an implicit side effect of a workflow test.

On-demand source and build policy

The public repository records the upstream URL and exact commit in upstreams/rayforge.json. scripts/prepare_rayforge_build.ps1 fetches that revision into the ignored .build/upstreams/ cache only when explicitly invoked. Its default action prepares source only; it neither installs the Windows toolchain nor starts a build.

The repository scripts do not install Windows dependencies. Bundle creation requires the explicit -BuildWindowsBundle switch and an already reviewed, prepared runtime. This keeps a multi-gigabyte MSYS2/UCRT64 toolchain out of normal clone, test and documentation workflows and makes a CI-produced bundle the preferred interaction-test input.

Next action

Produce or obtain an artifact for the pinned revision through the explicit on-demand build path, then rerun the preflight and perform the packaged no-device interaction checklist from rayforge-graphical-workflow-spike.md. Do not make the Windows build toolchain an implicit project dependency.