Clean up Python dependencies; document uv usage #8694
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1. We don't appear to use scipy anywhere (anymore?) 2. Pillow is a transitive dependency of imageio, but we don't appear to use it anywhere directly. 3. Move tools to their own dependency group 4. Export the full set to requirements.txt Use `[dependency-groups]` rather than `[project.optional-dependencies]` because the former is excluded from package metadata. The latter is meant to list dependencies whose presence enables optional _features_. The former is therefore a more appropriate place to list development dependencies. Also document some useful information on using ccache with `pip install .`.
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Pull Request Overview
This PR cleans up Python dependencies by removing unused dependencies and reorganizes development dependencies into proper dependency groups. The changes also add comprehensive documentation for using uv and ccache with pip builds to improve the development experience.
- Remove unused dependencies (scipy, pillow) from development dependencies
- Migrate from
[project.optional-dependencies]to[dependency-groups]and organize build tools into separate groups - Add documentation for
uvusage and ccache configuration for faster pip builds
Reviewed Changes
Copilot reviewed 3 out of 4 changed files in this pull request and generated 1 comment.
| File | Description |
|---|---|
| pyproject.toml | Reorganizes build system requirements order, adjusts numpy version constraint, removes unused dependencies, and restructures dependency groups |
| doc/Python.md | Adds documentation for using uv as an alternative to pip for Python environment management |
| doc/BuildingHalideWithCMake.md | Removes scipy from system dependencies and adds comprehensive ccache configuration documentation |
Contributor
Did we turn on this Copilot nonsense on purpose? |
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Author
I clicked the button by mistake, but at least it caught a typo 🤷♂️ |
steven-johnson
approved these changes
Jul 24, 2025
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Clean up Python dependencies
Use
[dependency-groups]rather than[project.optional-dependencies]because the former is excluded from package metadata. The latter is meant to list dependencies whose presence enables optional features. The former is therefore a more appropriate place to list development dependencies.Also document some useful information on using ccache with
pip install ..