## Summary This fixes a few bugs introduced by https://github.com/astral-sh/uv/pull/5104. I previously thought we could track conflicting locals the same way we track conflicting URLs in forks, but it turns out that ends up being very tricky. URL forks work because we prioritize directly URL requirements. We can't prioritize locals in the same way without conflicting with the URL prioritization (this may be possible but it's not trivial), so we run into issues where a correct resolution depends on the order in which dependencies are traversed. Instead, we track local versions across all forks in `Locals`. When applying a local version, we apply all locals with markers that intersect with the current fork. This way we end up applying some local versions without creating a fork. For example, given: ``` // pyproject.toml dependencies = [ "torch==2.0.0+cu118 ; platform_machine == 'x86_64'", ] // requirements.in torch==2.0.0 . ``` We choose `2.0.0+cu118` in all cases. However, if a disjoint fork is created based on local versions, the resolver will choose the most compatible local when it narrows to a specific fork. Thus we correctly respect local versions when forking: ``` // pyproject.toml dependencies = [ "torch==2.0.0+cu118 ; platform_machine == 'x86_64'", "torch==2.0.0+cpu ; platform_machine != 'x86_64'" ] // requirements.in torch==2.0.0 . ``` We should also be able to use a similar strategy for https://github.com/astral-sh/uv/pull/5150. ## Test Plan This fixes https://github.com/astral-sh/uv/issues/5220 locally for me, as well as a few other bugs that were not reported yet.
Crates
bench
Functionality for benchmarking uv.
cache-key
Generic functionality for caching paths, URLs, and other resources across platforms.
distribution-filename
Parse built distribution (wheel) and source distribution (sdist) filenames to extract structured metadata.
distribution-types
Abstractions for representing built distributions (wheels) and source distributions (sdists), and the sources from which they can be downloaded.
install-wheel-rs
Install built distributions (wheels) into a virtual environment.]
once-map
A waitmap-like concurrent hash map for executing tasks
exactly once.
pep440-rs
Utilities for interacting with Python version numbers and specifiers.
pep508-rs
Utilities for interacting with PEP 508 dependency specifiers.
platform-host
Functionality for detecting the current platform (operating system, architecture, etc.).
platform-tags
Functionality for parsing and inferring Python platform tags as per PEP 425.
uv
Command-line interface for the uv package manager.
uv-build
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-package
Types and functionality for working with Python packages, e.g., parsing wheel files.
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.
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.
requirements-txt
Functionality for parsing requirements.txt files.