fix: use system Python and pin requires-python to pod range

[ng]

Summary

• Revert Renovate bot's requires-python bump from >=3.14,<3.15 back to >=3.9,<3.11 (PR chore(deps): Update python Python to >=3.14,<3.15 #385 broke all pods)
• Add --python python3 to uv sync in install and sp-update — forces uv to use the system Python instead of downloading one
• Add Renovate rule to cap requires-python at <3.11 (Pod 3 is 3.9, Pod 4/5 is 3.10)

Root cause

Renovate auto-merged #385 which bumped requires-python to >=3.14,<3.15. This caused uv sync to download CPython 3.14.3, which has no pre-built wheels for numpy/scipy/contourpy on aarch64. It then tried to compile from source, which failed because Yocto has no C++ compiler.

Test plan

• sp-update dev on Pod 4 (@punkmaniac) — should use system Python 3.10, not download 3.14
• Pod 5 — previously verified with >=3.9,<3.11 + system Python 3.10.4

Summary by CodeRabbit

• Chores
  • Expanded Python version compatibility across all modules to support Python 3.9-3.10
  • Updated dependency management configuration with explicit Python version constraints
  • Enhanced environment setup scripts with explicit Python interpreter specification

[coderabbitai]

Caution

Review failed

Pull request was closed or merged during review

📝 Walkthrough

Walkthrough

The PR updates Python version constraints across four biometrics modules from >=3.14,<3.15 to >=3.9,<3.11, adds a Renovate configuration rule to cap Python version updates at <3.11, and explicitly specifies the Python interpreter (python3) when syncing module environments via uv.

Changes

Cohort / File(s)	Summary
Module Python Version Constraints modules/calibrator/pyproject.toml, modules/environment-monitor/pyproject.toml, modules/piezo-processor/pyproject.toml, modules/sleep-detector/pyproject.toml	Updated requires-python constraint from >=3.14,<3.15 to >=3.9,<3.11 in each module's project metadata.
Renovate Configuration renovate.json	Added new packageRules entry targeting python package via pep621 manager with allowedVersions: "<3.11" to constrain Python version updates.
Module Environment Sync Scripts scripts/bin/sp-update, scripts/install	Added explicit --python python3 flag to uv sync --frozen invocations to specify the Python interpreter during module environment synchronization.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Possibly related PRs

• fix: replace venv+pip with uv for biometrics module setup #384: Applies similar per-module pyproject.toml Python version constraint updates and adds --python python3 to uv sync calls, directly related to the same environment provisioning changes.
• Fix Python venv creation on Pod 3/4 Yocto images #336: Modifies install and sp-update scripts to alter Python environment provisioning mechanisms, though using a different approach via scripts/setup-python-venv.

Poem

🐰 Hop, hop—constraints refined with care,
From future bounds to versions fair,
Python three-point-nine takes the stage,
While Renovate guards each version's age,
Scripts sing in harmony, explicit and true! ✨

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main changes: reverting Python version requirements back to the pod range and configuring uv to use system Python.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/380-pin-system-python

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[github-actions]

🎉 This PR is included in version 1.6.0 🎉

The release is available on GitHub release

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