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Supported Python Versions
With Python 2.7 officially going EOL on 01 Jan 2020, we need a support plan for the repo project itself. Inevitably, there will be a long tail of users who still want to use Python 2 on their old LTS/corp systems and have little power to change the system.
Summary
- Python 3.6 (released Dec 2016) is required by default starting with repo-1.14.
- Older versions of Python (e.g. v2.7) may use the legacy feature-frozen branch based on repo-1.13.
Overview
We provide a branch for Python 2 users that is feature-frozen. Bugfixes may be added on a best-effort basis or from the community, but largely no new features will be added, nor is support guaranteed.
Users can select this during repo init time via the repo launcher.
Otherwise the default branches (e.g. stable & master) will be used which will
require Python 3.
This means the repo launcher needs to support both Python 2 & Python 3, but since it doesn't import any other repo code, this shouldn't be too problematic.
The master branch will require Python 3.6 at a minimum. If the system has an older version of Python 3, then users will have to select the legacy Python 2 branch instead.