Fix windows python path issue #218

Jason2866 · 2025-07-08T16:59:18Z

Description:

by setting the PYTHONPATH env variable with the Platformio (virtual) Python path

Checklist:

The pull request is done against the latest develop branch
Only relevant files were touched
Only one feature/fix was added per PR, more changes are allowed when changing boards.json
I accept the CLA

Summary by CodeRabbit

New Features
- Improved Python dependency management with dynamic environment setup for reliable package discovery.
- Enhanced installation process for required tools, providing clearer success or failure feedback.
Documentation
- Added comprehensive docstrings to multiple functions, detailing arguments, return values, and behavior for better clarity.

coderabbitai · 2025-07-08T16:59:24Z

"""

Walkthrough

The update centralizes Python dependency definitions, introduces functions to dynamically configure PYTHONPATH and sys.path based on the active Python environment, and ensures subprocesses inherit these settings. Dependency installation and package checks are improved for robustness. Comprehensive docstrings with argument and return type annotations are added throughout the codebase.

Changes

File(s)	Change Summary
builder/main.py	Centralized Python dependencies; added `add_to_pythonpath` and `setup_python_paths`; improved subprocess env setup; enhanced `install_python_deps` and `install_esptool` to use updated environment and return bool; added internal `_get_installed_uv_packages`; moved install calls; added detailed docstrings to many functions; updated `firmware_metrics` to use new env.

Poem

🐇
In the warren of code, new paths appear,
Python’s trails made crystal clear.
With docstrings bright and envs aligned,
Dependencies found, no bugs to find.
A hop, a skip, the builder’s delight—
Everything’s ready, and all set right!

"""

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📥 Commits

Reviewing files that changed from the base of the PR and between f889426 and 68c62ff.

📒 Files selected for processing (1)

builder/main.py (23 hunks)

🧰 Additional context used

🧠 Learnings (1)

builder/main.py (1)

Learnt from: Jason2866
PR: pioarduino/platform-espressif32#199
File: builder/main.py:221-226
Timestamp: 2025-06-26T09:55:55.788Z
Learning: In the _update_max_upload_size function in builder/main.py, the `sizes` variable that maps partition subtypes to their sizes should not be removed despite appearing unused to static analysis tools. The variable serves a purpose that's not immediately obvious from the code structure.

🔇 Additional comments (7)

builder/main.py (7)

38-47: LGTM: Well-structured dependency centralization.

The centralized python_deps dictionary improves maintainability by consolidating all Python dependencies with their version specifications in one location.

59-81: LGTM: Previous path normalization issue has been resolved.

The function correctly normalizes both the new path and existing paths before comparison, preventing duplicate entries with different path representations. This addresses the previous review feedback effectively.

83-122: Robust Python path setup with comprehensive fallback handling.

The function effectively handles various edge cases:

Validates Python executable existence

Uses subprocess with timeout for site-packages discovery

Provides fallback paths for both Windows and Unix systems

Includes proper error handling for subprocess failures

This should resolve Windows Python path issues by dynamically configuring paths based on the actual Python executable.

147-268: Enhanced dependency installation with improved error handling.

The function improvements include:

Better timeout handling (30 seconds)

Proper environment propagation via env=os.environ

Comprehensive error messages

Boolean return values for success/failure tracking

The nested _get_installed_uv_packages function is well-implemented with proper JSON parsing and error handling.

855-856: LGTM: Environment propagation for esp-idf-size.

The subprocess call correctly uses env=os.environ to ensure the modified PYTHONPATH is available to the esp-idf-size tool.

312-870: Comprehensive docstring enhancements improve code maintainability.

The addition of detailed docstrings with argument and return type annotations significantly improves code documentation. All functions now have clear descriptions of their purpose, parameters, and return values.

124-124: Early Python path setup ensures proper environment configuration.

Calling setup_python_paths(env) early in the script ensures that the Python environment is properly configured before any subprocess calls or dependency installations occur.

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Jason2866 · 2025-07-08T17:01:39Z

@coderabbitai full review

coderabbitai · 2025-07-08T17:01:44Z

✅ Actions performed

Full review triggered.

coderabbitai

Actionable comments posted: 1

📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between f889426 and d059a6b.

📒 Files selected for processing (1)

builder/main.py (23 hunks)

🧰 Additional context used

🧠 Learnings (1)

builder/main.py (1)

Learnt from: Jason2866
PR: pioarduino/platform-espressif32#199
File: builder/main.py:221-226
Timestamp: 2025-06-26T09:55:55.788Z
Learning: In the _update_max_upload_size function in builder/main.py, the `sizes` variable that maps partition subtypes to their sizes should not be removed despite appearing unused to static analysis tools. The variable serves a purpose that's not immediately obvious from the code structure.

🔇 Additional comments (6)

builder/main.py (6)

38-47: Good centralization of Python dependencies.

The centralized dictionary makes dependency management cleaner and more maintainable.

82-121: Well-designed Python path setup with robust fallbacks.

The function properly handles different scenarios:

Queries the actual Python executable for site-packages location

Provides platform-specific fallback paths

Includes appropriate error handling

This approach should effectively resolve the Windows Python path issues mentioned in the PR objectives.

171-172: Correct propagation of environment variables to subprocesses.

The consistent use of env=os.environ ensures that all subprocess calls inherit the modified PYTHONPATH, which is essential for resolving the Windows Python path issues.

Also applies to: 204-205, 247-248

280-285: Consistent environment propagation in esptool installation.

The function correctly passes the modified environment to subprocess calls, maintaining consistency with the overall fix.

Also applies to: 297-297

854-855: Environment correctly propagated to esp-idf-size subprocess.

The modification ensures that the esp-idf-size tool runs with the correct Python environment, completing the fix for Windows Python path issues.

126-136: Excellent documentation improvements throughout the codebase.

The comprehensive docstrings with argument and return type annotations significantly improve code maintainability and readability.

Also applies to: 147-152, 270-278, 311-320, 336-345, 362-371, 376-385, 390-399, 407-416, 425-433, 444-453, 462-471, 484-493, 537-547, 583-591, 595-602, 631-642, 647-653, 803-812

builder/main.py

Jason2866 · 2025-07-08T18:40:33Z

@coderabbitai full review

coderabbitai · 2025-07-08T18:40:39Z

✅ Actions performed

Full review triggered.

Jason2866 added 4 commits July 8, 2025 16:39

Update main.py

a464095

Use SCons env var for Python path

aa4a13b

move around

08ef75a

make sure current python env path is first in pythonpath

d059a6b

coderabbitai bot reviewed Jul 8, 2025

View reviewed changes

builder/main.py Outdated Show resolved Hide resolved

makes sure current entrys are converted to normpath

68c62ff

Jason2866 merged commit ab68ffd into develop Jul 8, 2025
66 checks passed

Jason2866 deleted the poc_python_windows_fix branch July 9, 2025 13:45

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