platformio/platformio-core

Warning when extending from own env

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#5096 opened on Mar 3, 2025

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 (1 comment) (0 reactions) (0 assignees)Python (7,329 stars) (791 forks)batch import
confighelp wanted

Description

PlatformIO Core, version 6.1.17

[base]
extends = base

Please don't ask how I found out, but this code results in pio being stuck without any warning

Contributor guide

Tech stack
python
Domain
toolingdeveloper experience
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
under 1 hour
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
basic Pythonunderstanding of platformio.ini
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
65
Research direction
Investigate the configuration parsing logic in the platformio core repository. Look for the `extends` directive handling in files like `platformio/project/config.py` or similar. The goal is to detect self referential extends (e.g., a section extending itself) and either break the loop or produce a warning. Check if there is existing validation for circular extends and add a check for direct self reference.