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Haystack uses Hatch for environment and dependency management.
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# Haystack Guidelines for AI Agents ## Environment Haystack uses **Hatch** for environment and dependency management. Do not run `python` or `pip` directly. Before running code on this project, you must be able to run `hatch --version` and get a correct output. If not, ask the user where Hatch is or if they want to install it. For installation instructions, refer to https://hatch.pypa.io/latest/install/#installation. ### Run scripts with test dependencies hatch -e test run python SCRIPT.py ### Open a shell with test dependencies hatch -e test shell ### Install temporary dependencies (for experiments only) uv pip install PACKAGE ### Delete the environment hatch env prune ## Tests Tests run via Hatch and support pytest arguments. Prefer running tests on a specific module or using `-k`, since the full suite is large. ### Run unit tests hatch run test:unit ### Run integration tests hatch run test:integration ## Quality Checks ### Type checking with mypy hatch run test:types To fix type issues, avoid `type: ignore`, casts, or assertions when possible. If they are necessary, explain why. ### Format and lint hatch run fmt ## Release Notes Every user-facing PR (not docs, not CI) must include a release note: hatch run release-note SHORT_DESCRIPTION Edit the generated file in `releasenotes/notes/`. Release notes use reStructuredText formatting; see the [release notes section in CONTRIBUTING.md](CONTRIBUTING.md#release-notes) for details.
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Haystack uses Hatch for environment and dependency management.
# Haystack Guidelines for AI Agents ## Environment Haystack uses **Hatch** for environment and dependency management. Do not run `python` or `pip` directly. Before running code on this project, you must be able to run `hatch --version` and get a correct output. If not, ask the user where Hatch is or if they want to install it. For installation instructions, refer to https://hatch.pypa.io/latest/install/#installation. ### Run scripts with test dependencies hatch -e test run python SCRIPT.py ### Open a shell with test dependencies hatch -e test shell ### Install temporary dependencies (for experiments only) uv pip install PACKAGE ### Delete the environment hatch env prune ## Tests Tests run via Hatch and support pytest arguments. Prefer running tests on a specific module or using `-k`, since the full suite is large. ### Run unit tests hatch run test:unit ### Run integration tests hatch run test:integration ## Quality Checks ### Type checking with mypy hatch run test:types To fix type issues, avoid `type: ignore`, casts, or assertions when possible. If they are necessary, explain why. ### Format and lint hatch run fmt ## Release Notes Every user-facing PR (not docs, not CI) must include a release note: hatch run release-note SHORT_DESCRIPTION Edit the generated file in `releasenotes/notes/`. Release notes use reStructuredText formatting; see the [release notes section in CONTRIBUTING.md](CONTRIBUTING.md#release-notes) for details.