## Summary Attempt to track and preserve relative/absolute paths when read from files. File URLs are treated as absolute. Synthetic VerbatimUrls shouldn't have a `given`, and are treated as relative. This means that paths passed as absolute will be output as absolute, although they may get normalized. Paths passed as relative will be output as relative but they may be relative to a different location (so that they continue to work going forwards). Previously in various places we'd either make things absolute unconditionally or relative unconditionally. Cases which should now be fixed: - uv.lock - Path dependencies, indexes, and find-links were always converted to relative paths. - pylock.toml export (from_resolution path) - Paths were always relativized. Now preserves the user's original format. - pylock.toml export (from_lock path) - Relative paths from the lock file were being converted to absolute paths. Now uses the path exactly as stored in the lock file. Also noteworthy is the bugfix for a windows misbehaviour. See the commit message for some more information. Note: For now the `uv add` side of this has been split off as a breaking change. ## Test Plan Added missing tests, updated existing. I believe all the changed tests are all now correct and were previously demonstrating buggy behaviour. Well, at least if you are on board with the idea that we should keep relative paths relative and absolute paths and / file URLs absolute. ## Related Issues/PRs * Closes https://github.com/astral-sh/uv/issues/15055 * Closes https://github.com/astral-sh/uv/issues/16602 * Closes https://github.com/astral-sh/uv/issues/16514 * Closes https://github.com/astral-sh/uv/pull/15870
Crates
uv-bench
Functionality for benchmarking uv.
uv-cache-key
Generic functionality for caching paths, URLs, and other resources across platforms.
uv-distribution-filename
Parse built distribution (wheel) and source distribution (sdist) filenames to extract structured metadata.
uv-distribution-types
Abstractions for representing built distributions (wheels) and source distributions (sdists), and the sources from which they can be downloaded.
uv-install-wheel-rs
Install built distributions (wheels) into a virtual environment.
uv-once-map
A waitmap-like concurrent hash map for executing tasks
exactly once.
uv-pep440-rs
Utilities for interacting with Python version numbers and specifiers.
uv-pep508-rs
Utilities for parsing and evaluating dependency specifiers, previously known as PEP 508.
uv-platform-tags
Functionality for parsing and inferring Python platform tags as per PEP 425.
uv-cli
Command-line interface for the uv package manager.
uv-build-frontend
A PEP 517-compatible build frontend for uv.
uv-cache
Functionality for caching Python packages and associated metadata.
uv-client
Client for interacting with PyPI-compatible HTTP APIs.
uv-dev
Development utilities for uv.
uv-dispatch
A centralized struct for resolving and building source distributions in isolated environments.
Implements the traits defined in uv-types.
uv-distribution
Client for interacting with built distributions (wheels) and source distributions (sdists). Capable of fetching metadata, distribution contents, etc.
uv-extract
Utilities for extracting files from archives.
uv-fs
Utilities for interacting with the filesystem.
uv-git
Functionality for interacting with Git repositories.
uv-installer
Functionality for installing Python packages into a virtual environment.
uv-python
Functionality for detecting and leveraging the current Python interpreter.
uv-normalize
Normalize package and extra names as per Python specifications.
uv-requirements
Utilities for reading package requirements from pyproject.toml and requirements.txt files.
uv-resolver
Functionality for resolving Python packages and their dependencies.
uv-shell
Utilities for detecting and manipulating shell environments.
uv-types
Shared traits for uv, to avoid circular dependencies.
uv-pypi-types
General-purpose type definitions for types used in PyPI-compatible APIs.
uv-virtualenv
A venv replacement to create virtual environments in Rust.
uv-warnings
User-facing warnings for uv.
uv-workspace
Workspace abstractions for uv.
uv-requirements-txt
Functionality for parsing requirements.txt files.