Mohammad Miadh Angkad
396ff569ca
## Summary Fixes #17814. When a Python version installed by uv spawns another Python version via subprocess (e.g., Python 3.12 spawning Python 3.13), the child process would inherit the parent's `PYTHONHOME` environment variable. This caused the child Python to load the wrong stdlib, resulting in errors like `AssertionError: SRE module mismatch`. The fix removes the check that prevented overwriting an inherited `PYTHONHOME` value. Now the Windows trampoline always sets `PYTHONHOME` to the correct directory for non-virtualenv Python installations, ensuring each Python version uses its own stdlib. ## Test Plan Tested manually using the reproduction script from the issue: ``` uv python install 3.12 uv python install 3.13 echo "from os import environ;print(environ['PYTHONHOME']);import re" > test.py python3.12.exe -c "import subprocess; subprocess.run(['python3.13.exe', 'test.py'])" ``` Before: `AssertionError: SRE module mismatch` After: Runs successfully with correct `PYTHONHOME` pointing to 3.13's installation. --------- Co-authored-by: Zanie Blue <contact@zanie.dev>
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.