4c161d284b
## Summary This PR revives https://github.com/astral-sh/uv/pull/7827 to improve tool resolutions such that, if the resolution fails, and the selected interpreter doesn't match the required Python version from the solve, we attempt to re-solve with a newly-discovered interpreter that _does_ match the required Python version. For now, we attempt to choose a Python interpreter that's greater than the inferred `requires-python`, but compatible with the same Python minor. This helps avoid successive failures for cases like Posting, where choosing Python 3.13 fails because it has a dependency that lacks source distributions and doesn't publish any Python 3.13 wheels. We should further improve the strategy to solve _that_ case too, but this is at least the more conservative option... In short, if you do `uv tool instal posting`, and we find Python 3.8 on your machine, we'll detect that `requires-python: >=3.11`, then search for the latest Python 3.11 interpreter and re-resolve. Closes https://github.com/astral-sh/uv/issues/6381. Closes https://github.com/astral-sh/uv/issues/10282. ## Test Plan The following should succeed: ``` cargo run python uninstall --all cargo run python install 3.8 cargo run tool install posting ``` In the logs, we see: ``` ... DEBUG No compatible version found for: posting DEBUG Refining interpreter with: Python >=3.11, <3.12 DEBUG Searching for Python >=3.11, <3.12 in managed installations or search path DEBUG Searching for managed installations at `/Users/crmarsh/.local/share/uv/python` DEBUG Skipping incompatible managed installation `cpython-3.8.20-macos-aarch64-none` DEBUG Found `cpython-3.13.1-macos-aarch64-none` at `/opt/homebrew/bin/python3` (search path) DEBUG Skipping interpreter at `/opt/homebrew/opt/python@3.13/bin/python3.13` from search path: does not satisfy request `>=3.11, <3.12` DEBUG Found `cpython-3.11.7-macos-aarch64-none` at `/opt/homebrew/bin/python3.11` (search path) DEBUG Re-resolving with Python 3.11.7 DEBUG Using request timeout of 30s DEBUG Solving with installed Python version: 3.11.7 DEBUG Solving with target Python version: >=3.11.7 DEBUG Adding direct dependency: posting* DEBUG Searching for a compatible version of posting (*) ... ```
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.