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docs: Add troubleshooting for Python version validation errors#580

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muhsinking merged 1 commit intomainfrom
promptless/flash-python-version-validation
Mar 23, 2026
Merged

docs: Add troubleshooting for Python version validation errors#580
muhsinking merged 1 commit intomainfrom
promptless/flash-python-version-validation

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@promptless promptless bot commented Mar 23, 2026

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Documents the new build-time Python version validation in Flash. When users run flash build with Python 3.13+, they'll now see a clear error message. This update adds a troubleshooting section explaining the error and how to switch to a supported Python version (3.10-3.12), and updates the build process documentation to include the validation step.

Trigger Events

runpod/flash PR #261: feat: Python version-aware Docker image selection

Promptless Research (9 files, 1 GitHub PR)

  • Reviewed runpod/flash#261
  • Viewed .long_term_context/product_knowledge/product_overview.md
  • Viewed .long_term_context/doc_workflow/client_instructions.md
  • Viewed flash/quickstart.mdx
  • Viewed flash/apps/build-app.mdx
  • Viewed flash/cli/build.mdx
  • Viewed flash/troubleshooting.mdx
  • Viewed flash/custom-docker-images.mdx
  • Viewed .long_term_context/style/client_style_guide.md
  • Viewed flash/overview.mdx

Agent Response

I've reviewed the PR and created a documentation suggestion.

Summary

PR #261 introduces Python version-aware Docker image selection for Flash, with build-time validation that will fail if users try to build with Python 3.13+.

Documentation changes made

I created a suggestion with the following updates:

  1. flash/troubleshooting.mdx - Added a new "Build errors" section with:

    • Documentation for the "Unsupported Python version" error message
    • Solutions showing how to switch to a supported Python version using pyenv or uv
  2. flash/cli/build.mdx - Updated to:

    • Add "Python version validation" as step 1 in the build process
    • Remove outdated Python 3.13+ workaround from "Dependency installation fails" (since the build now fails earlier at validation)

What was already documented

The Python version requirements (3.10-3.12) are already correctly documented in:

  • flash/quickstart.mdx
  • flash/overview.mdx
  • flash/apps/build-app.mdx
  • flash/cli/build.mdx (GPU/CPU Python version table)

No changes were needed to these pages.

Suggestion URL

The documentation suggestion is ready for review. Once PR #261 is merged, users who encounter the new Python version validation error will find clear troubleshooting guidance.


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## Build errors

### Unsupported Python version
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Citation: New troubleshooting section based on the Python version validation added in PR #261. The error message and solution are derived from validate_python_version() in constants.py and the build validation in build.py.
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3. **Manifest generation**: Creates `.flash/flash_manifest.json` with endpoint definitions.
4. **Dependency installation**: Installs Python packages for Linux x86_64.
5. **Packaging**: Bundles everything into `.flash/artifact.tar.gz`.
1. **Python version validation**: Verifies your local Python version is supported (3.10, 3.11, or 3.12).
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Citation: Added Python version validation as the first step in the build process, based on PR #261's changes to run_build() in build.py which now validates Python version unconditionally before any other build steps.
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@muhsinking muhsinking self-requested a review March 23, 2026 17:16
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promptless bot commented Mar 23, 2026

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@muhsinking muhsinking merged commit 3ef1109 into main Mar 23, 2026
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@muhsinking muhsinking deleted the promptless/flash-python-version-validation branch March 23, 2026 17:18
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runpod-docs 🔴 Failed Mar 23, 2026, 5:24 PM

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