Bug: Model download fails with missing file in PyInstaller temp dir (_MEI) on macOS

[LucianoVandi]

Environment

• Voicebox version: 0.1.13
• Bundle ID: sh.voicebox.app
• macOS: 14.3 (23D56), Apple Silicon (arm64)
• Reproduced on: 2026-02-27 (CET)

Steps to reproduce

1. Open Voicebox.
2. Start model download (HuggingFace).
3. Wait for completion/finalization phase.

Expected

Model download and initialization complete successfully.

Actual

Download does not complete successfully; app shows:

Error: [Errno 2] No such file or directory: '/var/folders/yk/cmrz5c7j5x930275y1q55w4c0000gn/T/_MEIFaFeHa/qwen_tts/core/models/modeling_qwen3_tts.py'

Additional logs observed

voicebox-server repeatedly logs:

Trust evaluate failure: [leaf TemporalValidity]

Observed timestamps:

• 2026-02-27 12:29:58 CET
• 2026-02-27 12:36:21 CET
• 2026-02-27 12:40:10 CET
• 2026-02-27 13:26:24 CET (after clean reinstall)

Connectivity checks

• curl -I https://huggingface.co -> HTTP/2 200
• curl -IL https://huggingface.co/Qwen/Qwen2.5-0.5B-Instruct/resolve/main/config.json -> 307 -> 200

Notes

• Clean reinstall performed (AppCleaner + residual folders removed), issue still reproducible.
• scutil --proxy returns {} (no system proxy configured).

Thanks for your work on Voicebox and for taking a look at this report. If useful, I can run additional diagnostics and share more logs quickly.

[peterbliu]

same problem, not finalized model download, Download stream is closed but does app does not complete successfully; app shows: [Errno 2] No such file or directory: '/var/folders/vx/qtvprcxd5z937w741_07ss640000gn/T/_MEI8cdu6y/qwen_tts/core/models/modeling_qwen3_tts.py'

[nanotower]

Same here

[LucianoVandi]

I did a deeper check and want to clarify behavior. This does not look like a plain network/connectivity issue as I initially thought.

The app runs a pyinstaller-bundled sidecar, and at runtime the model stack expects a physical Python source file at qwen_tts/core/models/modeling_qwen3_tts.py

In this packaged runtime, that source file is not present as a real file under the extracted _MEI... tree, so when code tries to access it by path, it fails with:

[Errno 2] No such file or directory: .../qwen_tts/core/models/modeling_qwen3_tts.py