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uv/crates/uv-pep508
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Charlie Marsh 734b228edf
Drop trailing slashes when converting index URL from URL (#14346) 
## Summary

In #14245, we started normalizing index URLs by dropping the trailing
slash in the lockfile. We added tests to ensure that this didn't cause
existing lockfiles to be invalidated, but we missed one of the
constructors (specifically, the path that's used with
`tool.uv.sources`).
2025-06-29 09:36:13 -04:00
..
src Drop trailing slashes when converting index URL from URL (#14346) 2025-06-29 09:36:13 -04:00
Cargo.toml Update schemars 1.0.0 (#13693) 2025-06-24 21:43:31 +02:00
Changelog.md Add uv- prefix to all internal crates (#7853) 2024-10-01 20:15:32 -04:00
License-Apache Add uv- prefix to all internal crates (#7853) 2024-10-01 20:15:32 -04:00
License-BSD Add uv- prefix to all internal crates (#7853) 2024-10-01 20:15:32 -04:00
Readme.md Use consistent commas around i.e. and e.g. (#12157) 2025-03-13 23:42:10 +00:00

Readme.md

Dependency specifiers (PEP 508) in Rust

Crates.io PyPI

A library for dependency specifiers, previously known as PEP 508.

Usage

use std::str::FromStr;
use pep508_rs::Requirement;

let marker = r#"requests [security,tests] >= 2.8.1, == 2.8.* ; python_version > "3.8""#;
let dependency_specification = Requirement::from_str(marker).unwrap();
assert_eq!(dependency_specification.name, "requests");
assert_eq!(dependency_specification.extras, Some(vec!["security".to_string(), "tests".to_string()]));

Markers

Markers allow you to install dependencies only in specific environments (python version, operating system, architecture, etc.) or when a specific feature is activated. E.g., you can say importlib-metadata ; python_version < "3.8" or itsdangerous (>=1.1.0) ; extra == 'security'. Unfortunately, the marker grammar has some oversights (e.g. https://github.com/pypa/packaging.python.org/pull/1181) and the design of comparisons (PEP 440 comparisons with lexicographic fallback) leads to confusing outcomes. This implementation tries to carefully validate everything and emit warnings whenever bogus comparisons with unintended semantics are made.