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skill-creator validator fails when PyYAML is not available globally #518
Description
Summary
The bundled skill-creator validator fails before validation when PyYAML is not installed globally.
No dependency setup is documented or included with the bundled skill.
Reproduction
Run:
python3 ~/.codex/skills/.system/skill-creator/scripts/quick_validate.py \
~/.codex/skills/.system/skill-creatorActual result
ModuleNotFoundError: No module named 'yaml'
Expected result
The bundled validator runs without undocumented global dependencies.
Impact
- Documented validation workflow cannot run
- Codex Desktop and CLI affected when their selected Python lacks
PyYAML
Environment
- macOS 26.5.2
- Codex CLI 0.145.0
- Python 3.14.6 from Homebrew
Reacted by Omico
Activity
adamtest commentedon Aug 28, 2026
This repository is now deprecated, while the current bundled skill-creator source lives in
openai/codex. I reproduced the same undeclared-PyYAML failure there and documented a permanent native-validator design, with a verified implementation reference, on the active Codex issue:openai/codex#36245 (comment)
The key boundary is to remove validation from unmanaged host Python entirely: Codex should parse authored skill YAML with the Rust YAML stack it already ships, while the legacy helper remains only a dependency-free launcher. That fixes the packaging problem rather than requiring users to install PyYAML globally.