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Run pre-commit with uv

Project description

pre-commit-uv

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Use uv to create virtual environments and install packages for pre-commit.

Installation

With pipx:

pipx install pre-commit
pipx inject pre-commit pre-commit-uv

With uv:

uv tool install pre-commit --with pre-commit-uv --force-reinstall

Why?

Compared to upstream pre-commit will speed up the initial seed operation. In general, upstream recommends caching the pre-commit cache, however, that is not always possible and is still helpful to have a more performant initial cache creation., Here's an example of what you could expect demonstrated on this project's own pre-commit setup (with a hot uv cache):

 hyperfine  'pre-commit install-hooks' 'pre-commit-uv install-hooks'
Benchmark 1: pre-commit install-hooks
  Time (mean ± σ):     54.132 s ±  8.827 s    [User: 15.424 s, System: 9.359 s]
  Range (min  max):   45.972 s  66.506 s    10 runs

Benchmark 2: pre-commit-uv install-hooks
  Time (mean ± σ):     41.695 s ±  7.395 s    [User: 7.614 s, System: 6.133 s]
  Range (min  max):   32.198 s  58.467 s    10 runs

Summary
  pre-commit-uv install-hooks ran 1.30 ± 0.31 times faster than pre-commit install-hooks

Configuration

Once installed will use uv out of box, however the DISABLE_PRE_COMMIT_UV_PATCH environment variable if is set it will work as an escape hatch to disable the new behavior.

To avoid interpreter startup overhead of the patching, we only perform this when we detect you calling pre-commit. Should this logic fail you can force the patching by setting the FORCE_PRE_COMMIT_UV_PATCH variable. Should you experience this please raise an issue with the content of the sys.argv. Note that DISABLE_PRE_COMMIT_UV_PATCH will overwrite this flag should both be set.

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