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uv init's Default Project Layout Just Changed in 0.12.0

2026-07-29 ยท source:

uv 0.12.0 changes the default directory structure that uv init produces, a breaking change from the layout used by uv 0.11.x.

What it is

A new release of uv, Astral's Python package and project manager, noted for shipping breaking changes to the scaffolding generated by its `uv init` shortcut.

What it does

Changes what `uv init` produces compared to the previous 0.11.x layout, altering the default project structure that a huge number of `uv`-based Python projects start from.

Why it matters

If your onboarding docs, templates, or CI scripts assume the old `uv init` output, they'll silently drift once teammates or pipelines upgrade to 0.12.0; worth checking before you pin or unpin the version.

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uvpythonpackaging
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