uv-requirements-txt

crates/uv-requirements-txt/ is uv's requirements.txt parser. It supports the full pip-compatible surface: -r, -c, -e, --index-url, --extra-index-url, --hash, hashes per-line, environment-marker filtering, and PEP 508 requirements.

Purpose

Compatibility with pip's input format is non-negotiable for uv pip install -r requirements.txt. This crate is the parser that ensures uv reads the same files pip does.

Key abstractions

• RequirementsTxt — parsed output.
• RequirementsTxtRequirement — a parsed requirement with hashes and editable/non-editable flags.
• RequirementsTxtFileMode — how to interpret nested -r includes.

See also

• uv-pep508 — used for individual requirement parsing.
• uv-requirements — the wider input composer.