a6daab422f
Add an incompatibility that lets pubgrub skip of marker packages when the base package already has an incompatible version to improve the error messages (https://github.com/astral-sh/uv/issues/15199). The change is also a small perf improvement. Overall this should be able to improve performance in slow cases by avoiding trying proxy package versions that are impossible anyway, for a (ideally very small cost) for tracking the additional incompatibility and tracking the base package for each proxy package. ``` $ hhyperfine --warmup 2 "uv pip compile --universal scripts/requirements/airflow.in" "target/release/uv pip compile --universal scripts/requirements/airflow.in" Benchmark 1: uv pip compile --universal scripts/requirements/airflow.in Time (mean ± σ): 145.5 ms ± 3.9 ms [User: 154.7 ms, System: 140.7 ms] Range (min … max): 139.2 ms … 153.4 ms 20 runs Benchmark 2: target/release/uv pip compile --universal scripts/requirements/airflow.in Time (mean ± σ): 128.7 ms ± 5.5 ms [User: 141.9 ms, System: 137.3 ms] Range (min … max): 121.8 ms … 142.0 ms 23 runs Summary target/release/uv pip compile --universal scripts/requirements/airflow.in ran 1.13 ± 0.06 times faster than uv pip compile --universal scripts/requirements/airflow.in ``` This implementation is the basic version: When we see a proxy `foo{...}>=x,<y` we add a dependency edge `foo{...}>=x,<y` -> `foo>=x,<y`. There are several way to extend this, which likely help more with performance than with error messages. One idea is that if we see `foo{...}>=x,<y` but we already made a selection for `foo==z` outside that range, we can insert a dependency `foo{...}!=z` -> `foo!=z`. This avoids trying any version of the proxy package except the version that matches our previous selection. Another is that if we see a dependency `foo>=x,<y`, we also add `foo{...}>=x,y` -> `foo>=x,<y`. This allows backtracking beyond `foo` immediately if all version of `foo{...}>=x,<y` are incompatible, since `foo{...}>=x,<y` incompatible -> `foo>=x,<y` incompatible -> the package that depended of `foo>=x,<y` is incompatible. The cost for each of these operations is tracking an additional incompatibility per virtual package. An alternative approach is to only add the incompatibility lazily, only when we've tried several version of the virtual package already. This needs to be weighed of with the better error messages that the incompatibility gives, we unfortunately have only few large reference examples. Requires https://github.com/astral-sh/pubgrub/pull/45 Closes https://github.com/astral-sh/uv/issues/15199
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.